blob: e154677ff706834285ce6f4a7bd6f00d83118818 [file] [log] [blame]
Linus Torvalds1da177e2005-04-16 15:20:36 -07001/* pcnet32.c: An AMD PCnet32 ethernet driver for linux. */
2/*
3 * Copyright 1996-1999 Thomas Bogendoerfer
4 *
5 * Derived from the lance driver written 1993,1994,1995 by Donald Becker.
6 *
7 * Copyright 1993 United States Government as represented by the
8 * Director, National Security Agency.
9 *
10 * This software may be used and distributed according to the terms
11 * of the GNU General Public License, incorporated herein by reference.
12 *
13 * This driver is for PCnet32 and PCnetPCI based ethercards
14 */
15/**************************************************************************
16 * 23 Oct, 2000.
17 * Fixed a few bugs, related to running the controller in 32bit mode.
18 *
19 * Carsten Langgaard, carstenl@mips.com
20 * Copyright (C) 2000 MIPS Technologies, Inc. All rights reserved.
21 *
22 *************************************************************************/
23
24#define DRV_NAME "pcnet32"
Don Fry01935d72008-04-29 13:49:58 -070025#define DRV_VERSION "1.35"
26#define DRV_RELDATE "21.Apr.2008"
Linus Torvalds1da177e2005-04-16 15:20:36 -070027#define PFX DRV_NAME ": "
28
Jeff Garzik4a5e8e22006-03-21 16:15:44 -050029static const char *const version =
30 DRV_NAME ".c:v" DRV_VERSION " " DRV_RELDATE " tsbogend@alpha.franken.de\n";
Linus Torvalds1da177e2005-04-16 15:20:36 -070031
32#include <linux/module.h>
33#include <linux/kernel.h>
Alexey Dobriyand43c36d2009-10-07 17:09:06 +040034#include <linux/sched.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070035#include <linux/string.h>
36#include <linux/errno.h>
37#include <linux/ioport.h>
38#include <linux/slab.h>
39#include <linux/interrupt.h>
40#include <linux/pci.h>
41#include <linux/delay.h>
42#include <linux/init.h>
43#include <linux/ethtool.h>
44#include <linux/mii.h>
45#include <linux/crc32.h>
46#include <linux/netdevice.h>
47#include <linux/etherdevice.h>
Daniel Drake1f044932009-12-24 08:11:24 +000048#include <linux/if_ether.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070049#include <linux/skbuff.h>
50#include <linux/spinlock.h>
51#include <linux/moduleparam.h>
52#include <linux/bitops.h>
53
54#include <asm/dma.h>
55#include <asm/io.h>
56#include <asm/uaccess.h>
57#include <asm/irq.h>
58
59/*
60 * PCI device identifiers for "new style" Linux PCI Device Drivers
61 */
62static struct pci_device_id pcnet32_pci_tbl[] = {
Don Fryf2622a22006-06-29 13:52:58 -070063 { PCI_DEVICE(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_LANCE_HOME), },
64 { PCI_DEVICE(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_LANCE), },
Jeff Garzik4a5e8e22006-03-21 16:15:44 -050065
66 /*
67 * Adapters that were sold with IBM's RS/6000 or pSeries hardware have
68 * the incorrect vendor id.
69 */
Don Fryf2622a22006-06-29 13:52:58 -070070 { PCI_DEVICE(PCI_VENDOR_ID_TRIDENT, PCI_DEVICE_ID_AMD_LANCE),
71 .class = (PCI_CLASS_NETWORK_ETHERNET << 8), .class_mask = 0xffff00, },
Jeff Garzik4a5e8e22006-03-21 16:15:44 -050072
73 { } /* terminate list */
Linus Torvalds1da177e2005-04-16 15:20:36 -070074};
75
Jeff Garzik4a5e8e22006-03-21 16:15:44 -050076MODULE_DEVICE_TABLE(pci, pcnet32_pci_tbl);
Linus Torvalds1da177e2005-04-16 15:20:36 -070077
78static int cards_found;
79
80/*
81 * VLB I/O addresses
82 */
83static unsigned int pcnet32_portlist[] __initdata =
Jeff Garzik4a5e8e22006-03-21 16:15:44 -050084 { 0x300, 0x320, 0x340, 0x360, 0 };
Linus Torvalds1da177e2005-04-16 15:20:36 -070085
86static int pcnet32_debug = 0;
Jeff Garzik4a5e8e22006-03-21 16:15:44 -050087static int tx_start = 1; /* Mapping -- 0:20, 1:64, 2:128, 3:~220 (depends on chip vers) */
88static int pcnet32vlb; /* check for VLB cards ? */
Linus Torvalds1da177e2005-04-16 15:20:36 -070089
90static struct net_device *pcnet32_dev;
91
92static int max_interrupt_work = 2;
93static int rx_copybreak = 200;
94
95#define PCNET32_PORT_AUI 0x00
96#define PCNET32_PORT_10BT 0x01
97#define PCNET32_PORT_GPSI 0x02
98#define PCNET32_PORT_MII 0x03
99
100#define PCNET32_PORT_PORTSEL 0x03
101#define PCNET32_PORT_ASEL 0x04
102#define PCNET32_PORT_100 0x40
103#define PCNET32_PORT_FD 0x80
104
105#define PCNET32_DMA_MASK 0xffffffff
106
107#define PCNET32_WATCHDOG_TIMEOUT (jiffies + (2 * HZ))
108#define PCNET32_BLINK_TIMEOUT (jiffies + (HZ/4))
109
110/*
111 * table to translate option values from tulip
112 * to internal options
113 */
Arjan van de Venf71e1302006-03-03 21:33:57 -0500114static const unsigned char options_mapping[] = {
Jeff Garzik4a5e8e22006-03-21 16:15:44 -0500115 PCNET32_PORT_ASEL, /* 0 Auto-select */
116 PCNET32_PORT_AUI, /* 1 BNC/AUI */
117 PCNET32_PORT_AUI, /* 2 AUI/BNC */
118 PCNET32_PORT_ASEL, /* 3 not supported */
119 PCNET32_PORT_10BT | PCNET32_PORT_FD, /* 4 10baseT-FD */
120 PCNET32_PORT_ASEL, /* 5 not supported */
121 PCNET32_PORT_ASEL, /* 6 not supported */
122 PCNET32_PORT_ASEL, /* 7 not supported */
123 PCNET32_PORT_ASEL, /* 8 not supported */
124 PCNET32_PORT_MII, /* 9 MII 10baseT */
125 PCNET32_PORT_MII | PCNET32_PORT_FD, /* 10 MII 10baseT-FD */
126 PCNET32_PORT_MII, /* 11 MII (autosel) */
127 PCNET32_PORT_10BT, /* 12 10BaseT */
128 PCNET32_PORT_MII | PCNET32_PORT_100, /* 13 MII 100BaseTx */
129 /* 14 MII 100BaseTx-FD */
130 PCNET32_PORT_MII | PCNET32_PORT_100 | PCNET32_PORT_FD,
131 PCNET32_PORT_ASEL /* 15 not supported */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700132};
133
134static const char pcnet32_gstrings_test[][ETH_GSTRING_LEN] = {
Jeff Garzik4a5e8e22006-03-21 16:15:44 -0500135 "Loopback test (offline)"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700136};
Jeff Garzik4a5e8e22006-03-21 16:15:44 -0500137
Alejandro Martinez Ruiz4c3616c2007-10-18 10:00:15 +0200138#define PCNET32_TEST_LEN ARRAY_SIZE(pcnet32_gstrings_test)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700139
Don Fryac62ef02006-03-20 15:26:03 -0800140#define PCNET32_NUM_REGS 136
Linus Torvalds1da177e2005-04-16 15:20:36 -0700141
Jeff Garzik4a5e8e22006-03-21 16:15:44 -0500142#define MAX_UNITS 8 /* More are supported, limit only on options */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700143static int options[MAX_UNITS];
144static int full_duplex[MAX_UNITS];
145static int homepna[MAX_UNITS];
146
147/*
148 * Theory of Operation
149 *
150 * This driver uses the same software structure as the normal lance
151 * driver. So look for a verbose description in lance.c. The differences
152 * to the normal lance driver is the use of the 32bit mode of PCnet32
153 * and PCnetPCI chips. Because these chips are 32bit chips, there is no
154 * 16MB limitation and we don't need bounce buffers.
155 */
156
157/*
Linus Torvalds1da177e2005-04-16 15:20:36 -0700158 * Set the number of Tx and Rx buffers, using Log_2(# buffers).
159 * Reasonable default values are 4 Tx buffers, and 16 Rx buffers.
160 * That translates to 2 (4 == 2^^2) and 4 (16 == 2^^4).
161 */
162#ifndef PCNET32_LOG_TX_BUFFERS
Hubert WS Lineabf0412005-09-14 11:39:25 -0700163#define PCNET32_LOG_TX_BUFFERS 4
164#define PCNET32_LOG_RX_BUFFERS 5
165#define PCNET32_LOG_MAX_TX_BUFFERS 9 /* 2^9 == 512 */
166#define PCNET32_LOG_MAX_RX_BUFFERS 9
Linus Torvalds1da177e2005-04-16 15:20:36 -0700167#endif
168
169#define TX_RING_SIZE (1 << (PCNET32_LOG_TX_BUFFERS))
Hubert WS Lineabf0412005-09-14 11:39:25 -0700170#define TX_MAX_RING_SIZE (1 << (PCNET32_LOG_MAX_TX_BUFFERS))
Linus Torvalds1da177e2005-04-16 15:20:36 -0700171
172#define RX_RING_SIZE (1 << (PCNET32_LOG_RX_BUFFERS))
Hubert WS Lineabf0412005-09-14 11:39:25 -0700173#define RX_MAX_RING_SIZE (1 << (PCNET32_LOG_MAX_RX_BUFFERS))
Linus Torvalds1da177e2005-04-16 15:20:36 -0700174
Don Fry232c5642008-02-08 07:32:26 -0800175#define PKT_BUF_SKB 1544
176/* actual buffer length after being aligned */
177#define PKT_BUF_SIZE (PKT_BUF_SKB - NET_IP_ALIGN)
178/* chip wants twos complement of the (aligned) buffer length */
179#define NEG_BUF_SIZE (NET_IP_ALIGN - PKT_BUF_SKB)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700180
181/* Offsets from base I/O address. */
182#define PCNET32_WIO_RDP 0x10
183#define PCNET32_WIO_RAP 0x12
184#define PCNET32_WIO_RESET 0x14
185#define PCNET32_WIO_BDP 0x16
186
187#define PCNET32_DWIO_RDP 0x10
188#define PCNET32_DWIO_RAP 0x14
189#define PCNET32_DWIO_RESET 0x18
190#define PCNET32_DWIO_BDP 0x1C
191
192#define PCNET32_TOTAL_SIZE 0x20
193
Don Fry06c87852006-06-29 13:54:38 -0700194#define CSR0 0
195#define CSR0_INIT 0x1
196#define CSR0_START 0x2
197#define CSR0_STOP 0x4
198#define CSR0_TXPOLL 0x8
199#define CSR0_INTEN 0x40
200#define CSR0_IDON 0x0100
201#define CSR0_NORMAL (CSR0_START | CSR0_INTEN)
202#define PCNET32_INIT_LOW 1
203#define PCNET32_INIT_HIGH 2
204#define CSR3 3
205#define CSR4 4
206#define CSR5 5
207#define CSR5_SUSPEND 0x0001
208#define CSR15 15
209#define PCNET32_MC_FILTER 8
210
Don Fry8d916262006-08-22 10:22:37 -0700211#define PCNET32_79C970A 0x2621
212
Linus Torvalds1da177e2005-04-16 15:20:36 -0700213/* The PCNET32 Rx and Tx ring descriptors. */
214struct pcnet32_rx_head {
Al Viro3e335452007-08-23 00:45:46 -0400215 __le32 base;
216 __le16 buf_length; /* two`s complement of length */
217 __le16 status;
218 __le32 msg_length;
219 __le32 reserved;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700220};
221
222struct pcnet32_tx_head {
Al Viro3e335452007-08-23 00:45:46 -0400223 __le32 base;
224 __le16 length; /* two`s complement of length */
225 __le16 status;
226 __le32 misc;
227 __le32 reserved;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700228};
229
230/* The PCNET32 32-Bit initialization block, described in databook. */
231struct pcnet32_init_block {
Al Viro3e335452007-08-23 00:45:46 -0400232 __le16 mode;
233 __le16 tlen_rlen;
Jeff Garzik0b5bf222006-03-21 16:22:47 -0500234 u8 phys_addr[6];
Al Viro3e335452007-08-23 00:45:46 -0400235 __le16 reserved;
236 __le32 filter[2];
Jeff Garzik4a5e8e22006-03-21 16:15:44 -0500237 /* Receive and transmit ring base, along with extra bits. */
Al Viro3e335452007-08-23 00:45:46 -0400238 __le32 rx_ring;
239 __le32 tx_ring;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700240};
241
242/* PCnet32 access functions */
243struct pcnet32_access {
Jeff Garzik4a5e8e22006-03-21 16:15:44 -0500244 u16 (*read_csr) (unsigned long, int);
245 void (*write_csr) (unsigned long, int, u16);
246 u16 (*read_bcr) (unsigned long, int);
247 void (*write_bcr) (unsigned long, int, u16);
248 u16 (*read_rap) (unsigned long);
249 void (*write_rap) (unsigned long, u16);
250 void (*reset) (unsigned long);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700251};
252
253/*
Hubert WS Lin76209922005-09-14 11:39:27 -0700254 * The first field of pcnet32_private is read by the ethernet device
255 * so the structure should be allocated using pci_alloc_consistent().
Linus Torvalds1da177e2005-04-16 15:20:36 -0700256 */
257struct pcnet32_private {
Don Fry6ecb7662007-03-06 10:45:23 -0800258 struct pcnet32_init_block *init_block;
Jeff Garzik4a5e8e22006-03-21 16:15:44 -0500259 /* The Tx and Rx ring entries must be aligned on 16-byte boundaries in 32bit mode. */
Jeff Garzik0b5bf222006-03-21 16:22:47 -0500260 struct pcnet32_rx_head *rx_ring;
261 struct pcnet32_tx_head *tx_ring;
Don Fry6ecb7662007-03-06 10:45:23 -0800262 dma_addr_t init_dma_addr;/* DMA address of beginning of the init block,
263 returned by pci_alloc_consistent */
Jeff Garzik0b5bf222006-03-21 16:22:47 -0500264 struct pci_dev *pci_dev;
265 const char *name;
Jeff Garzik4a5e8e22006-03-21 16:15:44 -0500266 /* The saved address of a sent-in-place packet/buffer, for skfree(). */
Jeff Garzik0b5bf222006-03-21 16:22:47 -0500267 struct sk_buff **tx_skbuff;
268 struct sk_buff **rx_skbuff;
269 dma_addr_t *tx_dma_addr;
270 dma_addr_t *rx_dma_addr;
271 struct pcnet32_access a;
272 spinlock_t lock; /* Guard lock */
273 unsigned int cur_rx, cur_tx; /* The next free ring entry */
274 unsigned int rx_ring_size; /* current rx ring size */
275 unsigned int tx_ring_size; /* current tx ring size */
276 unsigned int rx_mod_mask; /* rx ring modular mask */
277 unsigned int tx_mod_mask; /* tx ring modular mask */
278 unsigned short rx_len_bits;
279 unsigned short tx_len_bits;
280 dma_addr_t rx_ring_dma_addr;
281 dma_addr_t tx_ring_dma_addr;
282 unsigned int dirty_rx, /* ring entries to be freed. */
283 dirty_tx;
284
Stephen Hemmingerbea33482007-10-03 16:41:36 -0700285 struct net_device *dev;
286 struct napi_struct napi;
Jeff Garzik0b5bf222006-03-21 16:22:47 -0500287 char tx_full;
288 char phycount; /* number of phys found */
289 int options;
290 unsigned int shared_irq:1, /* shared irq possible */
291 dxsuflo:1, /* disable transmit stop on uflo */
292 mii:1; /* mii port available */
293 struct net_device *next;
294 struct mii_if_info mii_if;
295 struct timer_list watchdog_timer;
296 struct timer_list blink_timer;
297 u32 msg_enable; /* debug message level */
Don Fryac62ef02006-03-20 15:26:03 -0800298
Jeff Garzik4a5e8e22006-03-21 16:15:44 -0500299 /* each bit indicates an available PHY */
Jeff Garzik0b5bf222006-03-21 16:22:47 -0500300 u32 phymask;
Don Fry8d916262006-08-22 10:22:37 -0700301 unsigned short chip_version; /* which variant this is */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700302};
303
Jeff Garzik4a5e8e22006-03-21 16:15:44 -0500304static int pcnet32_probe_pci(struct pci_dev *, const struct pci_device_id *);
305static int pcnet32_probe1(unsigned long, int, struct pci_dev *);
306static int pcnet32_open(struct net_device *);
307static int pcnet32_init_ring(struct net_device *);
Stephen Hemminger613573252009-08-31 19:50:58 +0000308static netdev_tx_t pcnet32_start_xmit(struct sk_buff *,
309 struct net_device *);
Jeff Garzik4a5e8e22006-03-21 16:15:44 -0500310static void pcnet32_tx_timeout(struct net_device *dev);
David Howells7d12e782006-10-05 14:55:46 +0100311static irqreturn_t pcnet32_interrupt(int, void *);
Jeff Garzik4a5e8e22006-03-21 16:15:44 -0500312static int pcnet32_close(struct net_device *);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700313static struct net_device_stats *pcnet32_get_stats(struct net_device *);
314static void pcnet32_load_multicast(struct net_device *dev);
315static void pcnet32_set_multicast_list(struct net_device *);
Jeff Garzik4a5e8e22006-03-21 16:15:44 -0500316static int pcnet32_ioctl(struct net_device *, struct ifreq *, int);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700317static void pcnet32_watchdog(struct net_device *);
318static int mdio_read(struct net_device *dev, int phy_id, int reg_num);
Jeff Garzik4a5e8e22006-03-21 16:15:44 -0500319static void mdio_write(struct net_device *dev, int phy_id, int reg_num,
320 int val);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700321static void pcnet32_restart(struct net_device *dev, unsigned int csr0_bits);
322static void pcnet32_ethtool_test(struct net_device *dev,
Jeff Garzik4a5e8e22006-03-21 16:15:44 -0500323 struct ethtool_test *eth_test, u64 * data);
324static int pcnet32_loopback_test(struct net_device *dev, uint64_t * data1);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700325static int pcnet32_phys_id(struct net_device *dev, u32 data);
326static void pcnet32_led_blink_callback(struct net_device *dev);
327static int pcnet32_get_regs_len(struct net_device *dev);
328static void pcnet32_get_regs(struct net_device *dev, struct ethtool_regs *regs,
Jeff Garzik4a5e8e22006-03-21 16:15:44 -0500329 void *ptr);
Don Fry1bcd3152005-04-29 14:51:17 -0700330static void pcnet32_purge_tx_ring(struct net_device *dev);
Andrew Mortonb166cfb2008-05-14 16:20:14 -0700331static int pcnet32_alloc_ring(struct net_device *dev, const char *name);
Hubert WS Lineabf0412005-09-14 11:39:25 -0700332static void pcnet32_free_ring(struct net_device *dev);
Don Fryac62ef02006-03-20 15:26:03 -0800333static void pcnet32_check_media(struct net_device *dev, int verbose);
Hubert WS Lineabf0412005-09-14 11:39:25 -0700334
Jeff Garzik4a5e8e22006-03-21 16:15:44 -0500335static u16 pcnet32_wio_read_csr(unsigned long addr, int index)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700336{
Jeff Garzik4a5e8e22006-03-21 16:15:44 -0500337 outw(index, addr + PCNET32_WIO_RAP);
338 return inw(addr + PCNET32_WIO_RDP);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700339}
340
Jeff Garzik4a5e8e22006-03-21 16:15:44 -0500341static void pcnet32_wio_write_csr(unsigned long addr, int index, u16 val)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700342{
Jeff Garzik4a5e8e22006-03-21 16:15:44 -0500343 outw(index, addr + PCNET32_WIO_RAP);
344 outw(val, addr + PCNET32_WIO_RDP);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700345}
346
Jeff Garzik4a5e8e22006-03-21 16:15:44 -0500347static u16 pcnet32_wio_read_bcr(unsigned long addr, int index)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700348{
Jeff Garzik4a5e8e22006-03-21 16:15:44 -0500349 outw(index, addr + PCNET32_WIO_RAP);
350 return inw(addr + PCNET32_WIO_BDP);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700351}
352
Jeff Garzik4a5e8e22006-03-21 16:15:44 -0500353static void pcnet32_wio_write_bcr(unsigned long addr, int index, u16 val)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700354{
Jeff Garzik4a5e8e22006-03-21 16:15:44 -0500355 outw(index, addr + PCNET32_WIO_RAP);
356 outw(val, addr + PCNET32_WIO_BDP);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700357}
358
Jeff Garzik4a5e8e22006-03-21 16:15:44 -0500359static u16 pcnet32_wio_read_rap(unsigned long addr)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700360{
Jeff Garzik4a5e8e22006-03-21 16:15:44 -0500361 return inw(addr + PCNET32_WIO_RAP);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700362}
363
Jeff Garzik4a5e8e22006-03-21 16:15:44 -0500364static void pcnet32_wio_write_rap(unsigned long addr, u16 val)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700365{
Jeff Garzik4a5e8e22006-03-21 16:15:44 -0500366 outw(val, addr + PCNET32_WIO_RAP);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700367}
368
Jeff Garzik4a5e8e22006-03-21 16:15:44 -0500369static void pcnet32_wio_reset(unsigned long addr)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700370{
Jeff Garzik4a5e8e22006-03-21 16:15:44 -0500371 inw(addr + PCNET32_WIO_RESET);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700372}
373
Jeff Garzik4a5e8e22006-03-21 16:15:44 -0500374static int pcnet32_wio_check(unsigned long addr)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700375{
Jeff Garzik4a5e8e22006-03-21 16:15:44 -0500376 outw(88, addr + PCNET32_WIO_RAP);
377 return (inw(addr + PCNET32_WIO_RAP) == 88);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700378}
379
380static struct pcnet32_access pcnet32_wio = {
Jeff Garzik4a5e8e22006-03-21 16:15:44 -0500381 .read_csr = pcnet32_wio_read_csr,
382 .write_csr = pcnet32_wio_write_csr,
383 .read_bcr = pcnet32_wio_read_bcr,
384 .write_bcr = pcnet32_wio_write_bcr,
385 .read_rap = pcnet32_wio_read_rap,
386 .write_rap = pcnet32_wio_write_rap,
387 .reset = pcnet32_wio_reset
Linus Torvalds1da177e2005-04-16 15:20:36 -0700388};
389
Jeff Garzik4a5e8e22006-03-21 16:15:44 -0500390static u16 pcnet32_dwio_read_csr(unsigned long addr, int index)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700391{
Jeff Garzik4a5e8e22006-03-21 16:15:44 -0500392 outl(index, addr + PCNET32_DWIO_RAP);
393 return (inl(addr + PCNET32_DWIO_RDP) & 0xffff);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700394}
395
Jeff Garzik4a5e8e22006-03-21 16:15:44 -0500396static void pcnet32_dwio_write_csr(unsigned long addr, int index, u16 val)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700397{
Jeff Garzik4a5e8e22006-03-21 16:15:44 -0500398 outl(index, addr + PCNET32_DWIO_RAP);
399 outl(val, addr + PCNET32_DWIO_RDP);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700400}
401
Jeff Garzik4a5e8e22006-03-21 16:15:44 -0500402static u16 pcnet32_dwio_read_bcr(unsigned long addr, int index)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700403{
Jeff Garzik4a5e8e22006-03-21 16:15:44 -0500404 outl(index, addr + PCNET32_DWIO_RAP);
405 return (inl(addr + PCNET32_DWIO_BDP) & 0xffff);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700406}
407
Jeff Garzik4a5e8e22006-03-21 16:15:44 -0500408static void pcnet32_dwio_write_bcr(unsigned long addr, int index, u16 val)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700409{
Jeff Garzik4a5e8e22006-03-21 16:15:44 -0500410 outl(index, addr + PCNET32_DWIO_RAP);
411 outl(val, addr + PCNET32_DWIO_BDP);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700412}
413
Jeff Garzik4a5e8e22006-03-21 16:15:44 -0500414static u16 pcnet32_dwio_read_rap(unsigned long addr)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700415{
Jeff Garzik4a5e8e22006-03-21 16:15:44 -0500416 return (inl(addr + PCNET32_DWIO_RAP) & 0xffff);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700417}
418
Jeff Garzik4a5e8e22006-03-21 16:15:44 -0500419static void pcnet32_dwio_write_rap(unsigned long addr, u16 val)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700420{
Jeff Garzik4a5e8e22006-03-21 16:15:44 -0500421 outl(val, addr + PCNET32_DWIO_RAP);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700422}
423
Jeff Garzik4a5e8e22006-03-21 16:15:44 -0500424static void pcnet32_dwio_reset(unsigned long addr)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700425{
Jeff Garzik4a5e8e22006-03-21 16:15:44 -0500426 inl(addr + PCNET32_DWIO_RESET);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700427}
428
Jeff Garzik4a5e8e22006-03-21 16:15:44 -0500429static int pcnet32_dwio_check(unsigned long addr)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700430{
Jeff Garzik4a5e8e22006-03-21 16:15:44 -0500431 outl(88, addr + PCNET32_DWIO_RAP);
432 return ((inl(addr + PCNET32_DWIO_RAP) & 0xffff) == 88);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700433}
434
435static struct pcnet32_access pcnet32_dwio = {
Jeff Garzik4a5e8e22006-03-21 16:15:44 -0500436 .read_csr = pcnet32_dwio_read_csr,
437 .write_csr = pcnet32_dwio_write_csr,
438 .read_bcr = pcnet32_dwio_read_bcr,
439 .write_bcr = pcnet32_dwio_write_bcr,
440 .read_rap = pcnet32_dwio_read_rap,
441 .write_rap = pcnet32_dwio_write_rap,
442 .reset = pcnet32_dwio_reset
Linus Torvalds1da177e2005-04-16 15:20:36 -0700443};
444
Don Fry06c87852006-06-29 13:54:38 -0700445static void pcnet32_netif_stop(struct net_device *dev)
446{
Stephen Hemmingerbea33482007-10-03 16:41:36 -0700447 struct pcnet32_private *lp = netdev_priv(dev);
Don Fry01935d72008-04-29 13:49:58 -0700448
Don Fry06c87852006-06-29 13:54:38 -0700449 dev->trans_start = jiffies;
Stephen Hemmingerbea33482007-10-03 16:41:36 -0700450 napi_disable(&lp->napi);
Don Fry06c87852006-06-29 13:54:38 -0700451 netif_tx_disable(dev);
452}
453
454static void pcnet32_netif_start(struct net_device *dev)
455{
Stephen Hemmingerbea33482007-10-03 16:41:36 -0700456 struct pcnet32_private *lp = netdev_priv(dev);
David S. Millerd1d08d12008-01-07 20:53:33 -0800457 ulong ioaddr = dev->base_addr;
458 u16 val;
Don Fry01935d72008-04-29 13:49:58 -0700459
Don Fry06c87852006-06-29 13:54:38 -0700460 netif_wake_queue(dev);
David S. Millerd1d08d12008-01-07 20:53:33 -0800461 val = lp->a.read_csr(ioaddr, CSR3);
462 val &= 0x00ff;
463 lp->a.write_csr(ioaddr, CSR3, val);
Stephen Hemmingerbea33482007-10-03 16:41:36 -0700464 napi_enable(&lp->napi);
Don Fry06c87852006-06-29 13:54:38 -0700465}
466
467/*
468 * Allocate space for the new sized tx ring.
469 * Free old resources
470 * Save new resources.
471 * Any failure keeps old resources.
472 * Must be called with lp->lock held.
473 */
474static void pcnet32_realloc_tx_ring(struct net_device *dev,
475 struct pcnet32_private *lp,
476 unsigned int size)
477{
478 dma_addr_t new_ring_dma_addr;
479 dma_addr_t *new_dma_addr_list;
480 struct pcnet32_tx_head *new_tx_ring;
481 struct sk_buff **new_skb_list;
482
483 pcnet32_purge_tx_ring(dev);
484
485 new_tx_ring = pci_alloc_consistent(lp->pci_dev,
486 sizeof(struct pcnet32_tx_head) *
487 (1 << size),
488 &new_ring_dma_addr);
489 if (new_tx_ring == NULL) {
490 if (netif_msg_drv(lp))
Joe Perchesad361c92009-07-06 13:05:40 -0700491 printk(KERN_ERR
Don Fry06c87852006-06-29 13:54:38 -0700492 "%s: Consistent memory allocation failed.\n",
493 dev->name);
494 return;
495 }
496 memset(new_tx_ring, 0, sizeof(struct pcnet32_tx_head) * (1 << size));
497
498 new_dma_addr_list = kcalloc((1 << size), sizeof(dma_addr_t),
499 GFP_ATOMIC);
500 if (!new_dma_addr_list) {
501 if (netif_msg_drv(lp))
Joe Perchesad361c92009-07-06 13:05:40 -0700502 printk(KERN_ERR
Don Fry06c87852006-06-29 13:54:38 -0700503 "%s: Memory allocation failed.\n", dev->name);
504 goto free_new_tx_ring;
505 }
506
507 new_skb_list = kcalloc((1 << size), sizeof(struct sk_buff *),
508 GFP_ATOMIC);
509 if (!new_skb_list) {
510 if (netif_msg_drv(lp))
Joe Perchesad361c92009-07-06 13:05:40 -0700511 printk(KERN_ERR
Don Fry06c87852006-06-29 13:54:38 -0700512 "%s: Memory allocation failed.\n", dev->name);
513 goto free_new_lists;
514 }
515
516 kfree(lp->tx_skbuff);
517 kfree(lp->tx_dma_addr);
518 pci_free_consistent(lp->pci_dev,
519 sizeof(struct pcnet32_tx_head) *
520 lp->tx_ring_size, lp->tx_ring,
521 lp->tx_ring_dma_addr);
522
523 lp->tx_ring_size = (1 << size);
524 lp->tx_mod_mask = lp->tx_ring_size - 1;
525 lp->tx_len_bits = (size << 12);
526 lp->tx_ring = new_tx_ring;
527 lp->tx_ring_dma_addr = new_ring_dma_addr;
528 lp->tx_dma_addr = new_dma_addr_list;
529 lp->tx_skbuff = new_skb_list;
530 return;
531
532 free_new_lists:
533 kfree(new_dma_addr_list);
534 free_new_tx_ring:
535 pci_free_consistent(lp->pci_dev,
536 sizeof(struct pcnet32_tx_head) *
537 (1 << size),
538 new_tx_ring,
539 new_ring_dma_addr);
540 return;
541}
542
543/*
544 * Allocate space for the new sized rx ring.
545 * Re-use old receive buffers.
546 * alloc extra buffers
547 * free unneeded buffers
548 * free unneeded buffers
549 * Save new resources.
550 * Any failure keeps old resources.
551 * Must be called with lp->lock held.
552 */
553static void pcnet32_realloc_rx_ring(struct net_device *dev,
554 struct pcnet32_private *lp,
555 unsigned int size)
556{
557 dma_addr_t new_ring_dma_addr;
558 dma_addr_t *new_dma_addr_list;
559 struct pcnet32_rx_head *new_rx_ring;
560 struct sk_buff **new_skb_list;
561 int new, overlap;
562
563 new_rx_ring = pci_alloc_consistent(lp->pci_dev,
564 sizeof(struct pcnet32_rx_head) *
565 (1 << size),
566 &new_ring_dma_addr);
567 if (new_rx_ring == NULL) {
568 if (netif_msg_drv(lp))
Joe Perchesad361c92009-07-06 13:05:40 -0700569 printk(KERN_ERR
Don Fry06c87852006-06-29 13:54:38 -0700570 "%s: Consistent memory allocation failed.\n",
571 dev->name);
572 return;
573 }
574 memset(new_rx_ring, 0, sizeof(struct pcnet32_rx_head) * (1 << size));
575
576 new_dma_addr_list = kcalloc((1 << size), sizeof(dma_addr_t),
577 GFP_ATOMIC);
578 if (!new_dma_addr_list) {
579 if (netif_msg_drv(lp))
Joe Perchesad361c92009-07-06 13:05:40 -0700580 printk(KERN_ERR
Don Fry06c87852006-06-29 13:54:38 -0700581 "%s: Memory allocation failed.\n", dev->name);
582 goto free_new_rx_ring;
583 }
584
585 new_skb_list = kcalloc((1 << size), sizeof(struct sk_buff *),
586 GFP_ATOMIC);
587 if (!new_skb_list) {
588 if (netif_msg_drv(lp))
Joe Perchesad361c92009-07-06 13:05:40 -0700589 printk(KERN_ERR
Don Fry06c87852006-06-29 13:54:38 -0700590 "%s: Memory allocation failed.\n", dev->name);
591 goto free_new_lists;
592 }
593
594 /* first copy the current receive buffers */
595 overlap = min(size, lp->rx_ring_size);
596 for (new = 0; new < overlap; new++) {
597 new_rx_ring[new] = lp->rx_ring[new];
598 new_dma_addr_list[new] = lp->rx_dma_addr[new];
599 new_skb_list[new] = lp->rx_skbuff[new];
600 }
601 /* now allocate any new buffers needed */
602 for (; new < size; new++ ) {
603 struct sk_buff *rx_skbuff;
Don Fry232c5642008-02-08 07:32:26 -0800604 new_skb_list[new] = dev_alloc_skb(PKT_BUF_SKB);
Don Fry06c87852006-06-29 13:54:38 -0700605 if (!(rx_skbuff = new_skb_list[new])) {
606 /* keep the original lists and buffers */
607 if (netif_msg_drv(lp))
608 printk(KERN_ERR
609 "%s: pcnet32_realloc_rx_ring dev_alloc_skb failed.\n",
610 dev->name);
611 goto free_all_new;
612 }
Don Fry232c5642008-02-08 07:32:26 -0800613 skb_reserve(rx_skbuff, NET_IP_ALIGN);
Don Fry06c87852006-06-29 13:54:38 -0700614
615 new_dma_addr_list[new] =
616 pci_map_single(lp->pci_dev, rx_skbuff->data,
Don Fry232c5642008-02-08 07:32:26 -0800617 PKT_BUF_SIZE, PCI_DMA_FROMDEVICE);
Al Viro3e335452007-08-23 00:45:46 -0400618 new_rx_ring[new].base = cpu_to_le32(new_dma_addr_list[new]);
Don Fry232c5642008-02-08 07:32:26 -0800619 new_rx_ring[new].buf_length = cpu_to_le16(NEG_BUF_SIZE);
Al Viro3e335452007-08-23 00:45:46 -0400620 new_rx_ring[new].status = cpu_to_le16(0x8000);
Don Fry06c87852006-06-29 13:54:38 -0700621 }
622 /* and free any unneeded buffers */
623 for (; new < lp->rx_ring_size; new++) {
624 if (lp->rx_skbuff[new]) {
625 pci_unmap_single(lp->pci_dev, lp->rx_dma_addr[new],
Don Fry232c5642008-02-08 07:32:26 -0800626 PKT_BUF_SIZE, PCI_DMA_FROMDEVICE);
Don Fry06c87852006-06-29 13:54:38 -0700627 dev_kfree_skb(lp->rx_skbuff[new]);
628 }
629 }
630
631 kfree(lp->rx_skbuff);
632 kfree(lp->rx_dma_addr);
633 pci_free_consistent(lp->pci_dev,
634 sizeof(struct pcnet32_rx_head) *
635 lp->rx_ring_size, lp->rx_ring,
636 lp->rx_ring_dma_addr);
637
638 lp->rx_ring_size = (1 << size);
639 lp->rx_mod_mask = lp->rx_ring_size - 1;
640 lp->rx_len_bits = (size << 4);
641 lp->rx_ring = new_rx_ring;
642 lp->rx_ring_dma_addr = new_ring_dma_addr;
643 lp->rx_dma_addr = new_dma_addr_list;
644 lp->rx_skbuff = new_skb_list;
645 return;
646
647 free_all_new:
648 for (; --new >= lp->rx_ring_size; ) {
649 if (new_skb_list[new]) {
650 pci_unmap_single(lp->pci_dev, new_dma_addr_list[new],
Don Fry232c5642008-02-08 07:32:26 -0800651 PKT_BUF_SIZE, PCI_DMA_FROMDEVICE);
Don Fry06c87852006-06-29 13:54:38 -0700652 dev_kfree_skb(new_skb_list[new]);
653 }
654 }
655 kfree(new_skb_list);
656 free_new_lists:
657 kfree(new_dma_addr_list);
658 free_new_rx_ring:
659 pci_free_consistent(lp->pci_dev,
660 sizeof(struct pcnet32_rx_head) *
661 (1 << size),
662 new_rx_ring,
663 new_ring_dma_addr);
664 return;
665}
666
Don Fryac5bfe42006-06-29 13:55:27 -0700667static void pcnet32_purge_rx_ring(struct net_device *dev)
668{
Don Fry1e56a4b2007-03-06 10:55:00 -0800669 struct pcnet32_private *lp = netdev_priv(dev);
Don Fryac5bfe42006-06-29 13:55:27 -0700670 int i;
671
672 /* free all allocated skbuffs */
673 for (i = 0; i < lp->rx_ring_size; i++) {
674 lp->rx_ring[i].status = 0; /* CPU owns buffer */
675 wmb(); /* Make sure adapter sees owner change */
676 if (lp->rx_skbuff[i]) {
677 pci_unmap_single(lp->pci_dev, lp->rx_dma_addr[i],
Don Fry232c5642008-02-08 07:32:26 -0800678 PKT_BUF_SIZE, PCI_DMA_FROMDEVICE);
Don Fryac5bfe42006-06-29 13:55:27 -0700679 dev_kfree_skb_any(lp->rx_skbuff[i]);
680 }
681 lp->rx_skbuff[i] = NULL;
682 lp->rx_dma_addr[i] = 0;
683 }
684}
685
Linus Torvalds1da177e2005-04-16 15:20:36 -0700686#ifdef CONFIG_NET_POLL_CONTROLLER
687static void pcnet32_poll_controller(struct net_device *dev)
688{
Jeff Garzik4a5e8e22006-03-21 16:15:44 -0500689 disable_irq(dev->irq);
David Howells7d12e782006-10-05 14:55:46 +0100690 pcnet32_interrupt(0, dev);
Jeff Garzik4a5e8e22006-03-21 16:15:44 -0500691 enable_irq(dev->irq);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700692}
693#endif
694
Linus Torvalds1da177e2005-04-16 15:20:36 -0700695static int pcnet32_get_settings(struct net_device *dev, struct ethtool_cmd *cmd)
696{
Don Fry1e56a4b2007-03-06 10:55:00 -0800697 struct pcnet32_private *lp = netdev_priv(dev);
Jeff Garzik4a5e8e22006-03-21 16:15:44 -0500698 unsigned long flags;
699 int r = -EOPNOTSUPP;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700700
Jeff Garzik4a5e8e22006-03-21 16:15:44 -0500701 if (lp->mii) {
702 spin_lock_irqsave(&lp->lock, flags);
703 mii_ethtool_gset(&lp->mii_if, cmd);
704 spin_unlock_irqrestore(&lp->lock, flags);
705 r = 0;
706 }
707 return r;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700708}
709
710static int pcnet32_set_settings(struct net_device *dev, struct ethtool_cmd *cmd)
711{
Don Fry1e56a4b2007-03-06 10:55:00 -0800712 struct pcnet32_private *lp = netdev_priv(dev);
Jeff Garzik4a5e8e22006-03-21 16:15:44 -0500713 unsigned long flags;
714 int r = -EOPNOTSUPP;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700715
Jeff Garzik4a5e8e22006-03-21 16:15:44 -0500716 if (lp->mii) {
717 spin_lock_irqsave(&lp->lock, flags);
718 r = mii_ethtool_sset(&lp->mii_if, cmd);
719 spin_unlock_irqrestore(&lp->lock, flags);
720 }
721 return r;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700722}
723
Jeff Garzik4a5e8e22006-03-21 16:15:44 -0500724static void pcnet32_get_drvinfo(struct net_device *dev,
725 struct ethtool_drvinfo *info)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700726{
Don Fry1e56a4b2007-03-06 10:55:00 -0800727 struct pcnet32_private *lp = netdev_priv(dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700728
Jeff Garzik4a5e8e22006-03-21 16:15:44 -0500729 strcpy(info->driver, DRV_NAME);
730 strcpy(info->version, DRV_VERSION);
731 if (lp->pci_dev)
732 strcpy(info->bus_info, pci_name(lp->pci_dev));
733 else
734 sprintf(info->bus_info, "VLB 0x%lx", dev->base_addr);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700735}
736
737static u32 pcnet32_get_link(struct net_device *dev)
738{
Don Fry1e56a4b2007-03-06 10:55:00 -0800739 struct pcnet32_private *lp = netdev_priv(dev);
Jeff Garzik4a5e8e22006-03-21 16:15:44 -0500740 unsigned long flags;
741 int r;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700742
Jeff Garzik4a5e8e22006-03-21 16:15:44 -0500743 spin_lock_irqsave(&lp->lock, flags);
744 if (lp->mii) {
745 r = mii_link_ok(&lp->mii_if);
Don Fry8d916262006-08-22 10:22:37 -0700746 } else if (lp->chip_version >= PCNET32_79C970A) {
Jeff Garzik4a5e8e22006-03-21 16:15:44 -0500747 ulong ioaddr = dev->base_addr; /* card base I/O address */
748 r = (lp->a.read_bcr(ioaddr, 4) != 0xc0);
Don Fry8d916262006-08-22 10:22:37 -0700749 } else { /* can not detect link on really old chips */
750 r = 1;
Jeff Garzik4a5e8e22006-03-21 16:15:44 -0500751 }
752 spin_unlock_irqrestore(&lp->lock, flags);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700753
Jeff Garzik4a5e8e22006-03-21 16:15:44 -0500754 return r;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700755}
756
757static u32 pcnet32_get_msglevel(struct net_device *dev)
758{
Don Fry1e56a4b2007-03-06 10:55:00 -0800759 struct pcnet32_private *lp = netdev_priv(dev);
Jeff Garzik4a5e8e22006-03-21 16:15:44 -0500760 return lp->msg_enable;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700761}
762
763static void pcnet32_set_msglevel(struct net_device *dev, u32 value)
764{
Don Fry1e56a4b2007-03-06 10:55:00 -0800765 struct pcnet32_private *lp = netdev_priv(dev);
Jeff Garzik4a5e8e22006-03-21 16:15:44 -0500766 lp->msg_enable = value;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700767}
768
769static int pcnet32_nway_reset(struct net_device *dev)
770{
Don Fry1e56a4b2007-03-06 10:55:00 -0800771 struct pcnet32_private *lp = netdev_priv(dev);
Jeff Garzik4a5e8e22006-03-21 16:15:44 -0500772 unsigned long flags;
773 int r = -EOPNOTSUPP;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700774
Jeff Garzik4a5e8e22006-03-21 16:15:44 -0500775 if (lp->mii) {
776 spin_lock_irqsave(&lp->lock, flags);
777 r = mii_nway_restart(&lp->mii_if);
778 spin_unlock_irqrestore(&lp->lock, flags);
779 }
780 return r;
781}
782
783static void pcnet32_get_ringparam(struct net_device *dev,
784 struct ethtool_ringparam *ering)
785{
Don Fry1e56a4b2007-03-06 10:55:00 -0800786 struct pcnet32_private *lp = netdev_priv(dev);
Jeff Garzik4a5e8e22006-03-21 16:15:44 -0500787
Don Fry6dcd60c2006-06-29 13:53:23 -0700788 ering->tx_max_pending = TX_MAX_RING_SIZE;
789 ering->tx_pending = lp->tx_ring_size;
790 ering->rx_max_pending = RX_MAX_RING_SIZE;
791 ering->rx_pending = lp->rx_ring_size;
Jeff Garzik4a5e8e22006-03-21 16:15:44 -0500792}
793
794static int pcnet32_set_ringparam(struct net_device *dev,
795 struct ethtool_ringparam *ering)
796{
Don Fry1e56a4b2007-03-06 10:55:00 -0800797 struct pcnet32_private *lp = netdev_priv(dev);
Jeff Garzik4a5e8e22006-03-21 16:15:44 -0500798 unsigned long flags;
Don Fry06c87852006-06-29 13:54:38 -0700799 unsigned int size;
800 ulong ioaddr = dev->base_addr;
Jeff Garzik4a5e8e22006-03-21 16:15:44 -0500801 int i;
802
803 if (ering->rx_mini_pending || ering->rx_jumbo_pending)
804 return -EINVAL;
805
806 if (netif_running(dev))
Don Fry06c87852006-06-29 13:54:38 -0700807 pcnet32_netif_stop(dev);
Jeff Garzik4a5e8e22006-03-21 16:15:44 -0500808
Linus Torvalds1da177e2005-04-16 15:20:36 -0700809 spin_lock_irqsave(&lp->lock, flags);
Don Fry06c87852006-06-29 13:54:38 -0700810 lp->a.write_csr(ioaddr, CSR0, CSR0_STOP); /* stop the chip */
811
812 size = min(ering->tx_pending, (unsigned int)TX_MAX_RING_SIZE);
Jeff Garzik4a5e8e22006-03-21 16:15:44 -0500813
814 /* set the minimum ring size to 4, to allow the loopback test to work
815 * unchanged.
816 */
817 for (i = 2; i <= PCNET32_LOG_MAX_TX_BUFFERS; i++) {
Don Fry06c87852006-06-29 13:54:38 -0700818 if (size <= (1 << i))
Jeff Garzik4a5e8e22006-03-21 16:15:44 -0500819 break;
820 }
Don Fry06c87852006-06-29 13:54:38 -0700821 if ((1 << i) != lp->tx_ring_size)
822 pcnet32_realloc_tx_ring(dev, lp, i);
Don Fryb368a3f2006-09-13 10:16:07 -0700823
Don Fry06c87852006-06-29 13:54:38 -0700824 size = min(ering->rx_pending, (unsigned int)RX_MAX_RING_SIZE);
Jeff Garzik4a5e8e22006-03-21 16:15:44 -0500825 for (i = 2; i <= PCNET32_LOG_MAX_RX_BUFFERS; i++) {
Don Fry06c87852006-06-29 13:54:38 -0700826 if (size <= (1 << i))
Jeff Garzik4a5e8e22006-03-21 16:15:44 -0500827 break;
828 }
Don Fry06c87852006-06-29 13:54:38 -0700829 if ((1 << i) != lp->rx_ring_size)
830 pcnet32_realloc_rx_ring(dev, lp, i);
Don Fryb368a3f2006-09-13 10:16:07 -0700831
Stephen Hemmingerbea33482007-10-03 16:41:36 -0700832 lp->napi.weight = lp->rx_ring_size / 2;
Jeff Garzik4a5e8e22006-03-21 16:15:44 -0500833
Don Fry06c87852006-06-29 13:54:38 -0700834 if (netif_running(dev)) {
835 pcnet32_netif_start(dev);
836 pcnet32_restart(dev, CSR0_NORMAL);
Jeff Garzik4a5e8e22006-03-21 16:15:44 -0500837 }
838
Don Frya88c8442005-11-01 12:04:33 -0800839 spin_unlock_irqrestore(&lp->lock, flags);
Hubert WS Lineabf0412005-09-14 11:39:25 -0700840
Don Fry06c87852006-06-29 13:54:38 -0700841 if (netif_msg_drv(lp))
842 printk(KERN_INFO
Jeff Garzik4a5e8e22006-03-21 16:15:44 -0500843 "%s: Ring Param Settings: RX: %d, TX: %d\n", dev->name,
844 lp->rx_ring_size, lp->tx_ring_size);
Hubert WS Lineabf0412005-09-14 11:39:25 -0700845
Jeff Garzik4a5e8e22006-03-21 16:15:44 -0500846 return 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700847}
848
Jeff Garzik4a5e8e22006-03-21 16:15:44 -0500849static void pcnet32_get_strings(struct net_device *dev, u32 stringset,
850 u8 * data)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700851{
Jeff Garzik4a5e8e22006-03-21 16:15:44 -0500852 memcpy(data, pcnet32_gstrings_test, sizeof(pcnet32_gstrings_test));
Linus Torvalds1da177e2005-04-16 15:20:36 -0700853}
854
Jeff Garzikb9f2c042007-10-03 18:07:32 -0700855static int pcnet32_get_sset_count(struct net_device *dev, int sset)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700856{
Jeff Garzikb9f2c042007-10-03 18:07:32 -0700857 switch (sset) {
858 case ETH_SS_TEST:
859 return PCNET32_TEST_LEN;
860 default:
861 return -EOPNOTSUPP;
862 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700863}
864
865static void pcnet32_ethtool_test(struct net_device *dev,
Jeff Garzik4a5e8e22006-03-21 16:15:44 -0500866 struct ethtool_test *test, u64 * data)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700867{
Don Fry1e56a4b2007-03-06 10:55:00 -0800868 struct pcnet32_private *lp = netdev_priv(dev);
Jeff Garzik4a5e8e22006-03-21 16:15:44 -0500869 int rc;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700870
Jeff Garzik4a5e8e22006-03-21 16:15:44 -0500871 if (test->flags == ETH_TEST_FL_OFFLINE) {
872 rc = pcnet32_loopback_test(dev, data);
873 if (rc) {
874 if (netif_msg_hw(lp))
875 printk(KERN_DEBUG "%s: Loopback test failed.\n",
876 dev->name);
877 test->flags |= ETH_TEST_FL_FAILED;
878 } else if (netif_msg_hw(lp))
879 printk(KERN_DEBUG "%s: Loopback test passed.\n",
880 dev->name);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700881 } else if (netif_msg_hw(lp))
Jeff Garzik4a5e8e22006-03-21 16:15:44 -0500882 printk(KERN_DEBUG
883 "%s: No tests to run (specify 'Offline' on ethtool).",
884 dev->name);
885} /* end pcnet32_ethtool_test */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700886
Jeff Garzik4a5e8e22006-03-21 16:15:44 -0500887static int pcnet32_loopback_test(struct net_device *dev, uint64_t * data1)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700888{
Don Fry1e56a4b2007-03-06 10:55:00 -0800889 struct pcnet32_private *lp = netdev_priv(dev);
Jeff Garzik4a5e8e22006-03-21 16:15:44 -0500890 struct pcnet32_access *a = &lp->a; /* access to registers */
891 ulong ioaddr = dev->base_addr; /* card base I/O address */
892 struct sk_buff *skb; /* sk buff */
893 int x, i; /* counters */
894 int numbuffs = 4; /* number of TX/RX buffers and descs */
895 u16 status = 0x8300; /* TX ring status */
Al Viro3e335452007-08-23 00:45:46 -0400896 __le16 teststatus; /* test of ring status */
Jeff Garzik4a5e8e22006-03-21 16:15:44 -0500897 int rc; /* return code */
898 int size; /* size of packets */
899 unsigned char *packet; /* source packet data */
900 static const int data_len = 60; /* length of source packets */
901 unsigned long flags;
902 unsigned long ticks;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700903
Jeff Garzik4a5e8e22006-03-21 16:15:44 -0500904 rc = 1; /* default to fail */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700905
Jeff Garzik4a5e8e22006-03-21 16:15:44 -0500906 if (netif_running(dev))
Don Fry7de745e2006-09-13 10:16:53 -0700907 pcnet32_netif_stop(dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700908
Jeff Garzik4a5e8e22006-03-21 16:15:44 -0500909 spin_lock_irqsave(&lp->lock, flags);
Don Fryac5bfe42006-06-29 13:55:27 -0700910 lp->a.write_csr(ioaddr, CSR0, CSR0_STOP); /* stop the chip */
911
912 numbuffs = min(numbuffs, (int)min(lp->rx_ring_size, lp->tx_ring_size));
Linus Torvalds1da177e2005-04-16 15:20:36 -0700913
Jeff Garzik4a5e8e22006-03-21 16:15:44 -0500914 /* Reset the PCNET32 */
915 lp->a.reset(ioaddr);
Don Fryb368a3f2006-09-13 10:16:07 -0700916 lp->a.write_csr(ioaddr, CSR4, 0x0915); /* auto tx pad */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700917
Jeff Garzik4a5e8e22006-03-21 16:15:44 -0500918 /* switch pcnet32 to 32bit mode */
919 lp->a.write_bcr(ioaddr, 20, 2);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700920
Jeff Garzik4a5e8e22006-03-21 16:15:44 -0500921 /* purge & init rings but don't actually restart */
922 pcnet32_restart(dev, 0x0000);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700923
Don Fryac5bfe42006-06-29 13:55:27 -0700924 lp->a.write_csr(ioaddr, CSR0, CSR0_STOP); /* Set STOP bit */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700925
Jeff Garzik4a5e8e22006-03-21 16:15:44 -0500926 /* Initialize Transmit buffers. */
927 size = data_len + 15;
928 for (x = 0; x < numbuffs; x++) {
929 if (!(skb = dev_alloc_skb(size))) {
930 if (netif_msg_hw(lp))
931 printk(KERN_DEBUG
932 "%s: Cannot allocate skb at line: %d!\n",
933 dev->name, __LINE__);
934 goto clean_up;
935 } else {
936 packet = skb->data;
937 skb_put(skb, size); /* create space for data */
938 lp->tx_skbuff[x] = skb;
Al Viro3e335452007-08-23 00:45:46 -0400939 lp->tx_ring[x].length = cpu_to_le16(-skb->len);
Jeff Garzik4a5e8e22006-03-21 16:15:44 -0500940 lp->tx_ring[x].misc = 0;
941
942 /* put DA and SA into the skb */
943 for (i = 0; i < 6; i++)
944 *packet++ = dev->dev_addr[i];
945 for (i = 0; i < 6; i++)
946 *packet++ = dev->dev_addr[i];
947 /* type */
948 *packet++ = 0x08;
949 *packet++ = 0x06;
950 /* packet number */
951 *packet++ = x;
952 /* fill packet with data */
953 for (i = 0; i < data_len; i++)
954 *packet++ = i;
955
956 lp->tx_dma_addr[x] =
957 pci_map_single(lp->pci_dev, skb->data, skb->len,
958 PCI_DMA_TODEVICE);
Al Viro3e335452007-08-23 00:45:46 -0400959 lp->tx_ring[x].base = cpu_to_le32(lp->tx_dma_addr[x]);
Jeff Garzik4a5e8e22006-03-21 16:15:44 -0500960 wmb(); /* Make sure owner changes after all others are visible */
Al Viro3e335452007-08-23 00:45:46 -0400961 lp->tx_ring[x].status = cpu_to_le16(status);
Jeff Garzik4a5e8e22006-03-21 16:15:44 -0500962 }
963 }
964
Don Fryac5bfe42006-06-29 13:55:27 -0700965 x = a->read_bcr(ioaddr, 32); /* set internal loopback in BCR32 */
966 a->write_bcr(ioaddr, 32, x | 0x0002);
Jeff Garzik4a5e8e22006-03-21 16:15:44 -0500967
Don Fryac5bfe42006-06-29 13:55:27 -0700968 /* set int loopback in CSR15 */
969 x = a->read_csr(ioaddr, CSR15) & 0xfffc;
970 lp->a.write_csr(ioaddr, CSR15, x | 0x0044);
Jeff Garzik4a5e8e22006-03-21 16:15:44 -0500971
Al Viro3e335452007-08-23 00:45:46 -0400972 teststatus = cpu_to_le16(0x8000);
Don Fryac5bfe42006-06-29 13:55:27 -0700973 lp->a.write_csr(ioaddr, CSR0, CSR0_START); /* Set STRT bit */
Jeff Garzik4a5e8e22006-03-21 16:15:44 -0500974
975 /* Check status of descriptors */
976 for (x = 0; x < numbuffs; x++) {
977 ticks = 0;
978 rmb();
979 while ((lp->rx_ring[x].status & teststatus) && (ticks < 200)) {
980 spin_unlock_irqrestore(&lp->lock, flags);
Don Fryac5bfe42006-06-29 13:55:27 -0700981 msleep(1);
Jeff Garzik4a5e8e22006-03-21 16:15:44 -0500982 spin_lock_irqsave(&lp->lock, flags);
983 rmb();
984 ticks++;
985 }
986 if (ticks == 200) {
987 if (netif_msg_hw(lp))
988 printk("%s: Desc %d failed to reset!\n",
989 dev->name, x);
990 break;
991 }
992 }
993
Don Fryac5bfe42006-06-29 13:55:27 -0700994 lp->a.write_csr(ioaddr, CSR0, CSR0_STOP); /* Set STOP bit */
Jeff Garzik4a5e8e22006-03-21 16:15:44 -0500995 wmb();
996 if (netif_msg_hw(lp) && netif_msg_pktdata(lp)) {
997 printk(KERN_DEBUG "%s: RX loopback packets:\n", dev->name);
998
999 for (x = 0; x < numbuffs; x++) {
1000 printk(KERN_DEBUG "%s: Packet %d:\n", dev->name, x);
1001 skb = lp->rx_skbuff[x];
1002 for (i = 0; i < size; i++) {
1003 printk("%02x ", *(skb->data + i));
1004 }
1005 printk("\n");
1006 }
1007 }
1008
1009 x = 0;
1010 rc = 0;
1011 while (x < numbuffs && !rc) {
1012 skb = lp->rx_skbuff[x];
1013 packet = lp->tx_skbuff[x]->data;
1014 for (i = 0; i < size; i++) {
1015 if (*(skb->data + i) != packet[i]) {
1016 if (netif_msg_hw(lp))
1017 printk(KERN_DEBUG
1018 "%s: Error in compare! %2x - %02x %02x\n",
1019 dev->name, i, *(skb->data + i),
1020 packet[i]);
1021 rc = 1;
1022 break;
1023 }
1024 }
1025 x++;
1026 }
Jeff Garzik4a5e8e22006-03-21 16:15:44 -05001027
1028 clean_up:
Don Fryac5bfe42006-06-29 13:55:27 -07001029 *data1 = rc;
Jeff Garzik4a5e8e22006-03-21 16:15:44 -05001030 pcnet32_purge_tx_ring(dev);
Don Fryac5bfe42006-06-29 13:55:27 -07001031
1032 x = a->read_csr(ioaddr, CSR15);
1033 a->write_csr(ioaddr, CSR15, (x & ~0x0044)); /* reset bits 6 and 2 */
Jeff Garzik4a5e8e22006-03-21 16:15:44 -05001034
1035 x = a->read_bcr(ioaddr, 32); /* reset internal loopback */
Don Fryac5bfe42006-06-29 13:55:27 -07001036 a->write_bcr(ioaddr, 32, (x & ~0x0002));
Jeff Garzik4a5e8e22006-03-21 16:15:44 -05001037
Don Fry7de745e2006-09-13 10:16:53 -07001038 if (netif_running(dev)) {
1039 pcnet32_netif_start(dev);
1040 pcnet32_restart(dev, CSR0_NORMAL);
1041 } else {
1042 pcnet32_purge_rx_ring(dev);
1043 lp->a.write_bcr(ioaddr, 20, 4); /* return to 16bit mode */
1044 }
1045 spin_unlock_irqrestore(&lp->lock, flags);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001046
Jeff Garzik4a5e8e22006-03-21 16:15:44 -05001047 return (rc);
1048} /* end pcnet32_loopback_test */
Linus Torvalds1da177e2005-04-16 15:20:36 -07001049
1050static void pcnet32_led_blink_callback(struct net_device *dev)
1051{
Don Fry1e56a4b2007-03-06 10:55:00 -08001052 struct pcnet32_private *lp = netdev_priv(dev);
Jeff Garzik4a5e8e22006-03-21 16:15:44 -05001053 struct pcnet32_access *a = &lp->a;
1054 ulong ioaddr = dev->base_addr;
1055 unsigned long flags;
1056 int i;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001057
Jeff Garzik4a5e8e22006-03-21 16:15:44 -05001058 spin_lock_irqsave(&lp->lock, flags);
1059 for (i = 4; i < 8; i++) {
1060 a->write_bcr(ioaddr, i, a->read_bcr(ioaddr, i) ^ 0x4000);
1061 }
1062 spin_unlock_irqrestore(&lp->lock, flags);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001063
Jeff Garzik4a5e8e22006-03-21 16:15:44 -05001064 mod_timer(&lp->blink_timer, PCNET32_BLINK_TIMEOUT);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001065}
1066
1067static int pcnet32_phys_id(struct net_device *dev, u32 data)
1068{
Don Fry1e56a4b2007-03-06 10:55:00 -08001069 struct pcnet32_private *lp = netdev_priv(dev);
Jeff Garzik4a5e8e22006-03-21 16:15:44 -05001070 struct pcnet32_access *a = &lp->a;
1071 ulong ioaddr = dev->base_addr;
1072 unsigned long flags;
1073 int i, regs[4];
Linus Torvalds1da177e2005-04-16 15:20:36 -07001074
Jeff Garzik4a5e8e22006-03-21 16:15:44 -05001075 if (!lp->blink_timer.function) {
1076 init_timer(&lp->blink_timer);
1077 lp->blink_timer.function = (void *)pcnet32_led_blink_callback;
1078 lp->blink_timer.data = (unsigned long)dev;
1079 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07001080
Jeff Garzik4a5e8e22006-03-21 16:15:44 -05001081 /* Save the current value of the bcrs */
1082 spin_lock_irqsave(&lp->lock, flags);
1083 for (i = 4; i < 8; i++) {
1084 regs[i - 4] = a->read_bcr(ioaddr, i);
1085 }
1086 spin_unlock_irqrestore(&lp->lock, flags);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001087
Jeff Garzik4a5e8e22006-03-21 16:15:44 -05001088 mod_timer(&lp->blink_timer, jiffies);
1089 set_current_state(TASK_INTERRUPTIBLE);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001090
Al Viro3e335452007-08-23 00:45:46 -04001091 /* AV: the limit here makes no sense whatsoever */
Jeff Garzik4a5e8e22006-03-21 16:15:44 -05001092 if ((!data) || (data > (u32) (MAX_SCHEDULE_TIMEOUT / HZ)))
1093 data = (u32) (MAX_SCHEDULE_TIMEOUT / HZ);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001094
Jeff Garzik4a5e8e22006-03-21 16:15:44 -05001095 msleep_interruptible(data * 1000);
1096 del_timer_sync(&lp->blink_timer);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001097
Jeff Garzik4a5e8e22006-03-21 16:15:44 -05001098 /* Restore the original value of the bcrs */
1099 spin_lock_irqsave(&lp->lock, flags);
1100 for (i = 4; i < 8; i++) {
1101 a->write_bcr(ioaddr, i, regs[i - 4]);
1102 }
1103 spin_unlock_irqrestore(&lp->lock, flags);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001104
Jeff Garzik4a5e8e22006-03-21 16:15:44 -05001105 return 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001106}
1107
Don Frydf27f4a2006-06-29 13:55:02 -07001108/*
1109 * lp->lock must be held.
1110 */
1111static int pcnet32_suspend(struct net_device *dev, unsigned long *flags,
1112 int can_sleep)
1113{
1114 int csr5;
Don Fry1e56a4b2007-03-06 10:55:00 -08001115 struct pcnet32_private *lp = netdev_priv(dev);
Don Frydf27f4a2006-06-29 13:55:02 -07001116 struct pcnet32_access *a = &lp->a;
1117 ulong ioaddr = dev->base_addr;
1118 int ticks;
1119
Don Fry8d916262006-08-22 10:22:37 -07001120 /* really old chips have to be stopped. */
1121 if (lp->chip_version < PCNET32_79C970A)
1122 return 0;
1123
Don Frydf27f4a2006-06-29 13:55:02 -07001124 /* set SUSPEND (SPND) - CSR5 bit 0 */
1125 csr5 = a->read_csr(ioaddr, CSR5);
1126 a->write_csr(ioaddr, CSR5, csr5 | CSR5_SUSPEND);
1127
1128 /* poll waiting for bit to be set */
1129 ticks = 0;
1130 while (!(a->read_csr(ioaddr, CSR5) & CSR5_SUSPEND)) {
1131 spin_unlock_irqrestore(&lp->lock, *flags);
1132 if (can_sleep)
1133 msleep(1);
1134 else
1135 mdelay(1);
1136 spin_lock_irqsave(&lp->lock, *flags);
1137 ticks++;
1138 if (ticks > 200) {
1139 if (netif_msg_hw(lp))
1140 printk(KERN_DEBUG
1141 "%s: Error getting into suspend!\n",
1142 dev->name);
1143 return 0;
1144 }
1145 }
1146 return 1;
1147}
1148
Don Fry3904c322006-09-13 10:16:38 -07001149/*
1150 * process one receive descriptor entry
1151 */
Don Fry9691edd2006-09-13 10:16:21 -07001152
Don Fry3904c322006-09-13 10:16:38 -07001153static void pcnet32_rx_entry(struct net_device *dev,
1154 struct pcnet32_private *lp,
1155 struct pcnet32_rx_head *rxp,
1156 int entry)
1157{
1158 int status = (short)le16_to_cpu(rxp->status) >> 8;
1159 int rx_in_place = 0;
1160 struct sk_buff *skb;
1161 short pkt_len;
1162
1163 if (status != 0x03) { /* There was an error. */
1164 /*
1165 * There is a tricky error noted by John Murphy,
1166 * <murf@perftech.com> to Russ Nelson: Even with full-sized
1167 * buffers it's possible for a jabber packet to use two
1168 * buffers, with only the last correctly noting the error.
1169 */
1170 if (status & 0x01) /* Only count a general error at the */
Don Fry4f1e5ba2007-10-17 17:06:19 -07001171 dev->stats.rx_errors++; /* end of a packet. */
Don Fry3904c322006-09-13 10:16:38 -07001172 if (status & 0x20)
Don Fry4f1e5ba2007-10-17 17:06:19 -07001173 dev->stats.rx_frame_errors++;
Don Fry3904c322006-09-13 10:16:38 -07001174 if (status & 0x10)
Don Fry4f1e5ba2007-10-17 17:06:19 -07001175 dev->stats.rx_over_errors++;
Don Fry3904c322006-09-13 10:16:38 -07001176 if (status & 0x08)
Don Fry4f1e5ba2007-10-17 17:06:19 -07001177 dev->stats.rx_crc_errors++;
Don Fry3904c322006-09-13 10:16:38 -07001178 if (status & 0x04)
Don Fry4f1e5ba2007-10-17 17:06:19 -07001179 dev->stats.rx_fifo_errors++;
Don Fry3904c322006-09-13 10:16:38 -07001180 return;
1181 }
1182
1183 pkt_len = (le32_to_cpu(rxp->msg_length) & 0xfff) - 4;
1184
1185 /* Discard oversize frames. */
Don Fry232c5642008-02-08 07:32:26 -08001186 if (unlikely(pkt_len > PKT_BUF_SIZE)) {
Don Fry3904c322006-09-13 10:16:38 -07001187 if (netif_msg_drv(lp))
1188 printk(KERN_ERR "%s: Impossible packet size %d!\n",
1189 dev->name, pkt_len);
Don Fry4f1e5ba2007-10-17 17:06:19 -07001190 dev->stats.rx_errors++;
Don Fry3904c322006-09-13 10:16:38 -07001191 return;
1192 }
1193 if (pkt_len < 60) {
1194 if (netif_msg_rx_err(lp))
1195 printk(KERN_ERR "%s: Runt packet!\n", dev->name);
Don Fry4f1e5ba2007-10-17 17:06:19 -07001196 dev->stats.rx_errors++;
Don Fry3904c322006-09-13 10:16:38 -07001197 return;
1198 }
1199
1200 if (pkt_len > rx_copybreak) {
1201 struct sk_buff *newskb;
1202
Don Fry232c5642008-02-08 07:32:26 -08001203 if ((newskb = dev_alloc_skb(PKT_BUF_SKB))) {
1204 skb_reserve(newskb, NET_IP_ALIGN);
Don Fry3904c322006-09-13 10:16:38 -07001205 skb = lp->rx_skbuff[entry];
1206 pci_unmap_single(lp->pci_dev,
1207 lp->rx_dma_addr[entry],
Don Fry232c5642008-02-08 07:32:26 -08001208 PKT_BUF_SIZE,
Don Fry3904c322006-09-13 10:16:38 -07001209 PCI_DMA_FROMDEVICE);
1210 skb_put(skb, pkt_len);
1211 lp->rx_skbuff[entry] = newskb;
Don Fry3904c322006-09-13 10:16:38 -07001212 lp->rx_dma_addr[entry] =
1213 pci_map_single(lp->pci_dev,
1214 newskb->data,
Don Fry232c5642008-02-08 07:32:26 -08001215 PKT_BUF_SIZE,
Don Fry3904c322006-09-13 10:16:38 -07001216 PCI_DMA_FROMDEVICE);
Al Viro3e335452007-08-23 00:45:46 -04001217 rxp->base = cpu_to_le32(lp->rx_dma_addr[entry]);
Don Fry3904c322006-09-13 10:16:38 -07001218 rx_in_place = 1;
1219 } else
1220 skb = NULL;
1221 } else {
Don Fry232c5642008-02-08 07:32:26 -08001222 skb = dev_alloc_skb(pkt_len + NET_IP_ALIGN);
Don Fry3904c322006-09-13 10:16:38 -07001223 }
1224
1225 if (skb == NULL) {
1226 if (netif_msg_drv(lp))
1227 printk(KERN_ERR
1228 "%s: Memory squeeze, dropping packet.\n",
1229 dev->name);
Don Fry4f1e5ba2007-10-17 17:06:19 -07001230 dev->stats.rx_dropped++;
Don Fry3904c322006-09-13 10:16:38 -07001231 return;
1232 }
Don Fry3904c322006-09-13 10:16:38 -07001233 if (!rx_in_place) {
Don Fry232c5642008-02-08 07:32:26 -08001234 skb_reserve(skb, NET_IP_ALIGN);
Don Fry3904c322006-09-13 10:16:38 -07001235 skb_put(skb, pkt_len); /* Make room */
1236 pci_dma_sync_single_for_cpu(lp->pci_dev,
1237 lp->rx_dma_addr[entry],
Don Fryb2cbbd82007-03-05 18:13:09 -08001238 pkt_len,
Don Fry3904c322006-09-13 10:16:38 -07001239 PCI_DMA_FROMDEVICE);
David S. Miller8c7b7fa2007-07-10 22:08:12 -07001240 skb_copy_to_linear_data(skb,
Don Fry3904c322006-09-13 10:16:38 -07001241 (unsigned char *)(lp->rx_skbuff[entry]->data),
David S. Miller8c7b7fa2007-07-10 22:08:12 -07001242 pkt_len);
Don Fry3904c322006-09-13 10:16:38 -07001243 pci_dma_sync_single_for_device(lp->pci_dev,
1244 lp->rx_dma_addr[entry],
Don Fryb2cbbd82007-03-05 18:13:09 -08001245 pkt_len,
Don Fry3904c322006-09-13 10:16:38 -07001246 PCI_DMA_FROMDEVICE);
1247 }
Don Fry4f1e5ba2007-10-17 17:06:19 -07001248 dev->stats.rx_bytes += skb->len;
Don Fry3904c322006-09-13 10:16:38 -07001249 skb->protocol = eth_type_trans(skb, dev);
Don Fry7de745e2006-09-13 10:16:53 -07001250 netif_receive_skb(skb);
Don Fry4f1e5ba2007-10-17 17:06:19 -07001251 dev->stats.rx_packets++;
Don Fry3904c322006-09-13 10:16:38 -07001252 return;
1253}
1254
Stephen Hemmingerbea33482007-10-03 16:41:36 -07001255static int pcnet32_rx(struct net_device *dev, int budget)
Don Fry9691edd2006-09-13 10:16:21 -07001256{
Don Fry1e56a4b2007-03-06 10:55:00 -08001257 struct pcnet32_private *lp = netdev_priv(dev);
Don Fry9691edd2006-09-13 10:16:21 -07001258 int entry = lp->cur_rx & lp->rx_mod_mask;
Don Fry3904c322006-09-13 10:16:38 -07001259 struct pcnet32_rx_head *rxp = &lp->rx_ring[entry];
1260 int npackets = 0;
Don Fry9691edd2006-09-13 10:16:21 -07001261
1262 /* If we own the next entry, it's a new packet. Send it up. */
Stephen Hemmingerbea33482007-10-03 16:41:36 -07001263 while (npackets < budget && (short)le16_to_cpu(rxp->status) >= 0) {
Don Fry3904c322006-09-13 10:16:38 -07001264 pcnet32_rx_entry(dev, lp, rxp, entry);
1265 npackets += 1;
Don Fry9691edd2006-09-13 10:16:21 -07001266 /*
Don Fry3904c322006-09-13 10:16:38 -07001267 * The docs say that the buffer length isn't touched, but Andrew
1268 * Boyd of QNX reports that some revs of the 79C965 clear it.
Don Fry9691edd2006-09-13 10:16:21 -07001269 */
Don Fry232c5642008-02-08 07:32:26 -08001270 rxp->buf_length = cpu_to_le16(NEG_BUF_SIZE);
Don Fry3904c322006-09-13 10:16:38 -07001271 wmb(); /* Make sure owner changes after others are visible */
Al Viro3e335452007-08-23 00:45:46 -04001272 rxp->status = cpu_to_le16(0x8000);
Don Fry9691edd2006-09-13 10:16:21 -07001273 entry = (++lp->cur_rx) & lp->rx_mod_mask;
Don Fry3904c322006-09-13 10:16:38 -07001274 rxp = &lp->rx_ring[entry];
Don Fry9691edd2006-09-13 10:16:21 -07001275 }
1276
Don Fry7de745e2006-09-13 10:16:53 -07001277 return npackets;
Don Fry9691edd2006-09-13 10:16:21 -07001278}
1279
Don Fry7de745e2006-09-13 10:16:53 -07001280static int pcnet32_tx(struct net_device *dev)
Don Fry9691edd2006-09-13 10:16:21 -07001281{
Don Fry1e56a4b2007-03-06 10:55:00 -08001282 struct pcnet32_private *lp = netdev_priv(dev);
Don Fry9691edd2006-09-13 10:16:21 -07001283 unsigned int dirty_tx = lp->dirty_tx;
1284 int delta;
1285 int must_restart = 0;
1286
1287 while (dirty_tx != lp->cur_tx) {
1288 int entry = dirty_tx & lp->tx_mod_mask;
1289 int status = (short)le16_to_cpu(lp->tx_ring[entry].status);
1290
1291 if (status < 0)
1292 break; /* It still hasn't been Txed */
1293
1294 lp->tx_ring[entry].base = 0;
1295
1296 if (status & 0x4000) {
Don Fry3904c322006-09-13 10:16:38 -07001297 /* There was a major error, log it. */
Don Fry9691edd2006-09-13 10:16:21 -07001298 int err_status = le32_to_cpu(lp->tx_ring[entry].misc);
Don Fry4f1e5ba2007-10-17 17:06:19 -07001299 dev->stats.tx_errors++;
Don Fry9691edd2006-09-13 10:16:21 -07001300 if (netif_msg_tx_err(lp))
1301 printk(KERN_ERR
1302 "%s: Tx error status=%04x err_status=%08x\n",
1303 dev->name, status,
1304 err_status);
1305 if (err_status & 0x04000000)
Don Fry4f1e5ba2007-10-17 17:06:19 -07001306 dev->stats.tx_aborted_errors++;
Don Fry9691edd2006-09-13 10:16:21 -07001307 if (err_status & 0x08000000)
Don Fry4f1e5ba2007-10-17 17:06:19 -07001308 dev->stats.tx_carrier_errors++;
Don Fry9691edd2006-09-13 10:16:21 -07001309 if (err_status & 0x10000000)
Don Fry4f1e5ba2007-10-17 17:06:19 -07001310 dev->stats.tx_window_errors++;
Don Fry9691edd2006-09-13 10:16:21 -07001311#ifndef DO_DXSUFLO
1312 if (err_status & 0x40000000) {
Don Fry4f1e5ba2007-10-17 17:06:19 -07001313 dev->stats.tx_fifo_errors++;
Don Fry9691edd2006-09-13 10:16:21 -07001314 /* Ackk! On FIFO errors the Tx unit is turned off! */
1315 /* Remove this verbosity later! */
1316 if (netif_msg_tx_err(lp))
1317 printk(KERN_ERR
Don Fry7de745e2006-09-13 10:16:53 -07001318 "%s: Tx FIFO error!\n",
1319 dev->name);
Don Fry9691edd2006-09-13 10:16:21 -07001320 must_restart = 1;
1321 }
1322#else
1323 if (err_status & 0x40000000) {
Don Fry4f1e5ba2007-10-17 17:06:19 -07001324 dev->stats.tx_fifo_errors++;
Don Fry9691edd2006-09-13 10:16:21 -07001325 if (!lp->dxsuflo) { /* If controller doesn't recover ... */
1326 /* Ackk! On FIFO errors the Tx unit is turned off! */
1327 /* Remove this verbosity later! */
Don Fry3904c322006-09-13 10:16:38 -07001328 if (netif_msg_tx_err(lp))
Don Fry9691edd2006-09-13 10:16:21 -07001329 printk(KERN_ERR
Don Fry7de745e2006-09-13 10:16:53 -07001330 "%s: Tx FIFO error!\n",
1331 dev->name);
Don Fry9691edd2006-09-13 10:16:21 -07001332 must_restart = 1;
1333 }
1334 }
1335#endif
1336 } else {
1337 if (status & 0x1800)
Don Fry4f1e5ba2007-10-17 17:06:19 -07001338 dev->stats.collisions++;
1339 dev->stats.tx_packets++;
Don Fry9691edd2006-09-13 10:16:21 -07001340 }
1341
1342 /* We must free the original skb */
1343 if (lp->tx_skbuff[entry]) {
1344 pci_unmap_single(lp->pci_dev,
1345 lp->tx_dma_addr[entry],
1346 lp->tx_skbuff[entry]->
1347 len, PCI_DMA_TODEVICE);
Don Fry3904c322006-09-13 10:16:38 -07001348 dev_kfree_skb_any(lp->tx_skbuff[entry]);
Don Fry9691edd2006-09-13 10:16:21 -07001349 lp->tx_skbuff[entry] = NULL;
1350 lp->tx_dma_addr[entry] = 0;
1351 }
1352 dirty_tx++;
1353 }
1354
Don Fry3904c322006-09-13 10:16:38 -07001355 delta = (lp->cur_tx - dirty_tx) & (lp->tx_mod_mask + lp->tx_ring_size);
Don Fry9691edd2006-09-13 10:16:21 -07001356 if (delta > lp->tx_ring_size) {
1357 if (netif_msg_drv(lp))
1358 printk(KERN_ERR
1359 "%s: out-of-sync dirty pointer, %d vs. %d, full=%d.\n",
1360 dev->name, dirty_tx, lp->cur_tx,
1361 lp->tx_full);
1362 dirty_tx += lp->tx_ring_size;
1363 delta -= lp->tx_ring_size;
1364 }
1365
1366 if (lp->tx_full &&
1367 netif_queue_stopped(dev) &&
1368 delta < lp->tx_ring_size - 2) {
1369 /* The ring is no longer full, clear tbusy. */
1370 lp->tx_full = 0;
1371 netif_wake_queue(dev);
1372 }
1373 lp->dirty_tx = dirty_tx;
1374
1375 return must_restart;
1376}
1377
Stephen Hemmingerbea33482007-10-03 16:41:36 -07001378static int pcnet32_poll(struct napi_struct *napi, int budget)
Don Fry7de745e2006-09-13 10:16:53 -07001379{
Stephen Hemmingerbea33482007-10-03 16:41:36 -07001380 struct pcnet32_private *lp = container_of(napi, struct pcnet32_private, napi);
1381 struct net_device *dev = lp->dev;
Don Fry7de745e2006-09-13 10:16:53 -07001382 unsigned long ioaddr = dev->base_addr;
1383 unsigned long flags;
Stephen Hemmingerbea33482007-10-03 16:41:36 -07001384 int work_done;
Don Fry7de745e2006-09-13 10:16:53 -07001385 u16 val;
1386
Stephen Hemmingerbea33482007-10-03 16:41:36 -07001387 work_done = pcnet32_rx(dev, budget);
Don Fry7de745e2006-09-13 10:16:53 -07001388
1389 spin_lock_irqsave(&lp->lock, flags);
1390 if (pcnet32_tx(dev)) {
1391 /* reset the chip to clear the error condition, then restart */
1392 lp->a.reset(ioaddr);
1393 lp->a.write_csr(ioaddr, CSR4, 0x0915); /* auto tx pad */
1394 pcnet32_restart(dev, CSR0_START);
1395 netif_wake_queue(dev);
1396 }
1397 spin_unlock_irqrestore(&lp->lock, flags);
1398
Stephen Hemmingerbea33482007-10-03 16:41:36 -07001399 if (work_done < budget) {
1400 spin_lock_irqsave(&lp->lock, flags);
Don Fry7de745e2006-09-13 10:16:53 -07001401
Ben Hutchings288379f2009-01-19 16:43:59 -08001402 __napi_complete(napi);
Stephen Hemmingerbea33482007-10-03 16:41:36 -07001403
1404 /* clear interrupt masks */
1405 val = lp->a.read_csr(ioaddr, CSR3);
1406 val &= 0x00ff;
1407 lp->a.write_csr(ioaddr, CSR3, val);
1408
1409 /* Set interrupt enable. */
1410 lp->a.write_csr(ioaddr, CSR0, CSR0_INTEN);
John Dykstrace105a02009-04-29 17:22:30 -07001411
Stephen Hemmingerbea33482007-10-03 16:41:36 -07001412 spin_unlock_irqrestore(&lp->lock, flags);
Don Fry7de745e2006-09-13 10:16:53 -07001413 }
Stephen Hemmingerbea33482007-10-03 16:41:36 -07001414 return work_done;
Don Fry7de745e2006-09-13 10:16:53 -07001415}
Don Fry7de745e2006-09-13 10:16:53 -07001416
Don Fryac62ef02006-03-20 15:26:03 -08001417#define PCNET32_REGS_PER_PHY 32
1418#define PCNET32_MAX_PHYS 32
Linus Torvalds1da177e2005-04-16 15:20:36 -07001419static int pcnet32_get_regs_len(struct net_device *dev)
1420{
Don Fry1e56a4b2007-03-06 10:55:00 -08001421 struct pcnet32_private *lp = netdev_priv(dev);
Jeff Garzik4a5e8e22006-03-21 16:15:44 -05001422 int j = lp->phycount * PCNET32_REGS_PER_PHY;
Don Fryac62ef02006-03-20 15:26:03 -08001423
Jeff Garzik4a5e8e22006-03-21 16:15:44 -05001424 return ((PCNET32_NUM_REGS + j) * sizeof(u16));
Linus Torvalds1da177e2005-04-16 15:20:36 -07001425}
1426
1427static void pcnet32_get_regs(struct net_device *dev, struct ethtool_regs *regs,
Jeff Garzik4a5e8e22006-03-21 16:15:44 -05001428 void *ptr)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001429{
Jeff Garzik4a5e8e22006-03-21 16:15:44 -05001430 int i, csr0;
1431 u16 *buff = ptr;
Don Fry1e56a4b2007-03-06 10:55:00 -08001432 struct pcnet32_private *lp = netdev_priv(dev);
Jeff Garzik4a5e8e22006-03-21 16:15:44 -05001433 struct pcnet32_access *a = &lp->a;
1434 ulong ioaddr = dev->base_addr;
Jeff Garzik4a5e8e22006-03-21 16:15:44 -05001435 unsigned long flags;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001436
Jeff Garzik4a5e8e22006-03-21 16:15:44 -05001437 spin_lock_irqsave(&lp->lock, flags);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001438
Don Frydf27f4a2006-06-29 13:55:02 -07001439 csr0 = a->read_csr(ioaddr, CSR0);
1440 if (!(csr0 & CSR0_STOP)) /* If not stopped */
1441 pcnet32_suspend(dev, &flags, 1);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001442
Jeff Garzik4a5e8e22006-03-21 16:15:44 -05001443 /* read address PROM */
1444 for (i = 0; i < 16; i += 2)
1445 *buff++ = inw(ioaddr + i);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001446
Jeff Garzik4a5e8e22006-03-21 16:15:44 -05001447 /* read control and status registers */
1448 for (i = 0; i < 90; i++) {
1449 *buff++ = a->read_csr(ioaddr, i);
1450 }
1451
1452 *buff++ = a->read_csr(ioaddr, 112);
1453 *buff++ = a->read_csr(ioaddr, 114);
1454
1455 /* read bus configuration registers */
1456 for (i = 0; i < 30; i++) {
1457 *buff++ = a->read_bcr(ioaddr, i);
1458 }
1459 *buff++ = 0; /* skip bcr30 so as not to hang 79C976 */
1460 for (i = 31; i < 36; i++) {
1461 *buff++ = a->read_bcr(ioaddr, i);
1462 }
1463
1464 /* read mii phy registers */
1465 if (lp->mii) {
1466 int j;
1467 for (j = 0; j < PCNET32_MAX_PHYS; j++) {
1468 if (lp->phymask & (1 << j)) {
1469 for (i = 0; i < PCNET32_REGS_PER_PHY; i++) {
1470 lp->a.write_bcr(ioaddr, 33,
1471 (j << 5) | i);
1472 *buff++ = lp->a.read_bcr(ioaddr, 34);
1473 }
1474 }
1475 }
1476 }
1477
Don Frydf27f4a2006-06-29 13:55:02 -07001478 if (!(csr0 & CSR0_STOP)) { /* If not stopped */
1479 int csr5;
1480
Jeff Garzik4a5e8e22006-03-21 16:15:44 -05001481 /* clear SUSPEND (SPND) - CSR5 bit 0 */
Don Frydf27f4a2006-06-29 13:55:02 -07001482 csr5 = a->read_csr(ioaddr, CSR5);
1483 a->write_csr(ioaddr, CSR5, csr5 & (~CSR5_SUSPEND));
Jeff Garzik4a5e8e22006-03-21 16:15:44 -05001484 }
1485
1486 spin_unlock_irqrestore(&lp->lock, flags);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001487}
1488
Jeff Garzik7282d492006-09-13 14:30:00 -04001489static const struct ethtool_ops pcnet32_ethtool_ops = {
Jeff Garzik4a5e8e22006-03-21 16:15:44 -05001490 .get_settings = pcnet32_get_settings,
1491 .set_settings = pcnet32_set_settings,
1492 .get_drvinfo = pcnet32_get_drvinfo,
1493 .get_msglevel = pcnet32_get_msglevel,
1494 .set_msglevel = pcnet32_set_msglevel,
1495 .nway_reset = pcnet32_nway_reset,
1496 .get_link = pcnet32_get_link,
1497 .get_ringparam = pcnet32_get_ringparam,
1498 .set_ringparam = pcnet32_set_ringparam,
Jeff Garzik4a5e8e22006-03-21 16:15:44 -05001499 .get_strings = pcnet32_get_strings,
Jeff Garzik4a5e8e22006-03-21 16:15:44 -05001500 .self_test = pcnet32_ethtool_test,
1501 .phys_id = pcnet32_phys_id,
1502 .get_regs_len = pcnet32_get_regs_len,
1503 .get_regs = pcnet32_get_regs,
Jeff Garzikb9f2c042007-10-03 18:07:32 -07001504 .get_sset_count = pcnet32_get_sset_count,
Linus Torvalds1da177e2005-04-16 15:20:36 -07001505};
1506
1507/* only probes for non-PCI devices, the rest are handled by
1508 * pci_register_driver via pcnet32_probe_pci */
1509
Don Frydcaf9762006-06-29 13:52:29 -07001510static void __devinit pcnet32_probe_vlbus(unsigned int *pcnet32_portlist)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001511{
Jeff Garzik4a5e8e22006-03-21 16:15:44 -05001512 unsigned int *port, ioaddr;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001513
Jeff Garzik4a5e8e22006-03-21 16:15:44 -05001514 /* search for PCnet32 VLB cards at known addresses */
1515 for (port = pcnet32_portlist; (ioaddr = *port); port++) {
1516 if (request_region
1517 (ioaddr, PCNET32_TOTAL_SIZE, "pcnet32_probe_vlbus")) {
1518 /* check if there is really a pcnet chip on that ioaddr */
Joe Perches8e95a202009-12-03 07:58:21 +00001519 if ((inb(ioaddr + 14) == 0x57) &&
1520 (inb(ioaddr + 15) == 0x57)) {
Jeff Garzik4a5e8e22006-03-21 16:15:44 -05001521 pcnet32_probe1(ioaddr, 0, NULL);
1522 } else {
1523 release_region(ioaddr, PCNET32_TOTAL_SIZE);
1524 }
1525 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07001526 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07001527}
1528
Linus Torvalds1da177e2005-04-16 15:20:36 -07001529static int __devinit
1530pcnet32_probe_pci(struct pci_dev *pdev, const struct pci_device_id *ent)
1531{
Jeff Garzik4a5e8e22006-03-21 16:15:44 -05001532 unsigned long ioaddr;
1533 int err;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001534
Jeff Garzik4a5e8e22006-03-21 16:15:44 -05001535 err = pci_enable_device(pdev);
1536 if (err < 0) {
1537 if (pcnet32_debug & NETIF_MSG_PROBE)
1538 printk(KERN_ERR PFX
1539 "failed to enable device -- err=%d\n", err);
1540 return err;
1541 }
1542 pci_set_master(pdev);
1543
1544 ioaddr = pci_resource_start(pdev, 0);
1545 if (!ioaddr) {
1546 if (pcnet32_debug & NETIF_MSG_PROBE)
1547 printk(KERN_ERR PFX
1548 "card has no PCI IO resources, aborting\n");
1549 return -ENODEV;
1550 }
1551
1552 if (!pci_dma_supported(pdev, PCNET32_DMA_MASK)) {
1553 if (pcnet32_debug & NETIF_MSG_PROBE)
1554 printk(KERN_ERR PFX
1555 "architecture does not support 32bit PCI busmaster DMA\n");
1556 return -ENODEV;
1557 }
1558 if (request_region(ioaddr, PCNET32_TOTAL_SIZE, "pcnet32_probe_pci") ==
1559 NULL) {
1560 if (pcnet32_debug & NETIF_MSG_PROBE)
1561 printk(KERN_ERR PFX
1562 "io address range already allocated\n");
1563 return -EBUSY;
1564 }
1565
1566 err = pcnet32_probe1(ioaddr, 1, pdev);
1567 if (err < 0) {
1568 pci_disable_device(pdev);
1569 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07001570 return err;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001571}
1572
Stephen Hemminger3bc124d2009-01-07 17:29:16 -08001573static const struct net_device_ops pcnet32_netdev_ops = {
1574 .ndo_open = pcnet32_open,
1575 .ndo_stop = pcnet32_close,
1576 .ndo_start_xmit = pcnet32_start_xmit,
1577 .ndo_tx_timeout = pcnet32_tx_timeout,
1578 .ndo_get_stats = pcnet32_get_stats,
1579 .ndo_set_multicast_list = pcnet32_set_multicast_list,
1580 .ndo_do_ioctl = pcnet32_ioctl,
1581 .ndo_change_mtu = eth_change_mtu,
1582 .ndo_set_mac_address = eth_mac_addr,
1583 .ndo_validate_addr = eth_validate_addr,
1584#ifdef CONFIG_NET_POLL_CONTROLLER
1585 .ndo_poll_controller = pcnet32_poll_controller,
1586#endif
1587};
1588
Linus Torvalds1da177e2005-04-16 15:20:36 -07001589/* pcnet32_probe1
1590 * Called from both pcnet32_probe_vlbus and pcnet_probe_pci.
1591 * pdev will be NULL when called from pcnet32_probe_vlbus.
1592 */
1593static int __devinit
1594pcnet32_probe1(unsigned long ioaddr, int shared, struct pci_dev *pdev)
1595{
Jeff Garzik4a5e8e22006-03-21 16:15:44 -05001596 struct pcnet32_private *lp;
Jeff Garzik4a5e8e22006-03-21 16:15:44 -05001597 int i, media;
1598 int fdx, mii, fset, dxsuflo;
1599 int chip_version;
1600 char *chipname;
1601 struct net_device *dev;
1602 struct pcnet32_access *a = NULL;
1603 u8 promaddr[6];
1604 int ret = -ENODEV;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001605
Jeff Garzik4a5e8e22006-03-21 16:15:44 -05001606 /* reset the chip */
1607 pcnet32_wio_reset(ioaddr);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001608
Jeff Garzik4a5e8e22006-03-21 16:15:44 -05001609 /* NOTE: 16-bit check is first, otherwise some older PCnet chips fail */
1610 if (pcnet32_wio_read_csr(ioaddr, 0) == 4 && pcnet32_wio_check(ioaddr)) {
1611 a = &pcnet32_wio;
1612 } else {
1613 pcnet32_dwio_reset(ioaddr);
Joe Perches8e95a202009-12-03 07:58:21 +00001614 if (pcnet32_dwio_read_csr(ioaddr, 0) == 4 &&
1615 pcnet32_dwio_check(ioaddr)) {
Jeff Garzik4a5e8e22006-03-21 16:15:44 -05001616 a = &pcnet32_dwio;
Don Frydf4e7f72009-07-31 08:40:06 +00001617 } else {
1618 if (pcnet32_debug & NETIF_MSG_PROBE)
1619 printk(KERN_ERR PFX "No access methods\n");
Jeff Garzik4a5e8e22006-03-21 16:15:44 -05001620 goto err_release_region;
Don Frydf4e7f72009-07-31 08:40:06 +00001621 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07001622 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07001623
Jeff Garzik4a5e8e22006-03-21 16:15:44 -05001624 chip_version =
1625 a->read_csr(ioaddr, 88) | (a->read_csr(ioaddr, 89) << 16);
1626 if ((pcnet32_debug & NETIF_MSG_PROBE) && (pcnet32_debug & NETIF_MSG_HW))
1627 printk(KERN_INFO " PCnet chip version is %#x.\n",
1628 chip_version);
1629 if ((chip_version & 0xfff) != 0x003) {
1630 if (pcnet32_debug & NETIF_MSG_PROBE)
1631 printk(KERN_INFO PFX "Unsupported chip version.\n");
1632 goto err_release_region;
1633 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07001634
Jeff Garzik4a5e8e22006-03-21 16:15:44 -05001635 /* initialize variables */
1636 fdx = mii = fset = dxsuflo = 0;
1637 chip_version = (chip_version >> 12) & 0xffff;
1638
1639 switch (chip_version) {
1640 case 0x2420:
1641 chipname = "PCnet/PCI 79C970"; /* PCI */
1642 break;
1643 case 0x2430:
1644 if (shared)
1645 chipname = "PCnet/PCI 79C970"; /* 970 gives the wrong chip id back */
1646 else
1647 chipname = "PCnet/32 79C965"; /* 486/VL bus */
1648 break;
1649 case 0x2621:
1650 chipname = "PCnet/PCI II 79C970A"; /* PCI */
1651 fdx = 1;
1652 break;
1653 case 0x2623:
1654 chipname = "PCnet/FAST 79C971"; /* PCI */
1655 fdx = 1;
1656 mii = 1;
1657 fset = 1;
1658 break;
1659 case 0x2624:
1660 chipname = "PCnet/FAST+ 79C972"; /* PCI */
1661 fdx = 1;
1662 mii = 1;
1663 fset = 1;
1664 break;
1665 case 0x2625:
1666 chipname = "PCnet/FAST III 79C973"; /* PCI */
1667 fdx = 1;
1668 mii = 1;
1669 break;
1670 case 0x2626:
1671 chipname = "PCnet/Home 79C978"; /* PCI */
1672 fdx = 1;
1673 /*
1674 * This is based on specs published at www.amd.com. This section
1675 * assumes that a card with a 79C978 wants to go into standard
1676 * ethernet mode. The 79C978 can also go into 1Mb HomePNA mode,
1677 * and the module option homepna=1 can select this instead.
1678 */
1679 media = a->read_bcr(ioaddr, 49);
1680 media &= ~3; /* default to 10Mb ethernet */
1681 if (cards_found < MAX_UNITS && homepna[cards_found])
1682 media |= 1; /* switch to home wiring mode */
1683 if (pcnet32_debug & NETIF_MSG_PROBE)
1684 printk(KERN_DEBUG PFX "media set to %sMbit mode.\n",
1685 (media & 1) ? "1" : "10");
1686 a->write_bcr(ioaddr, 49, media);
1687 break;
1688 case 0x2627:
1689 chipname = "PCnet/FAST III 79C975"; /* PCI */
1690 fdx = 1;
1691 mii = 1;
1692 break;
1693 case 0x2628:
1694 chipname = "PCnet/PRO 79C976";
1695 fdx = 1;
1696 mii = 1;
1697 break;
1698 default:
1699 if (pcnet32_debug & NETIF_MSG_PROBE)
1700 printk(KERN_INFO PFX
1701 "PCnet version %#x, no PCnet32 chip.\n",
1702 chip_version);
1703 goto err_release_region;
1704 }
1705
1706 /*
1707 * On selected chips turn on the BCR18:NOUFLO bit. This stops transmit
1708 * starting until the packet is loaded. Strike one for reliability, lose
1709 * one for latency - although on PCI this isnt a big loss. Older chips
1710 * have FIFO's smaller than a packet, so you can't do this.
1711 * Turn on BCR18:BurstRdEn and BCR18:BurstWrEn.
1712 */
1713
1714 if (fset) {
1715 a->write_bcr(ioaddr, 18, (a->read_bcr(ioaddr, 18) | 0x0860));
1716 a->write_csr(ioaddr, 80,
1717 (a->read_csr(ioaddr, 80) & 0x0C00) | 0x0c00);
1718 dxsuflo = 1;
1719 }
1720
Don Fry6ecb7662007-03-06 10:45:23 -08001721 dev = alloc_etherdev(sizeof(*lp));
Jeff Garzik4a5e8e22006-03-21 16:15:44 -05001722 if (!dev) {
1723 if (pcnet32_debug & NETIF_MSG_PROBE)
1724 printk(KERN_ERR PFX "Memory allocation failed.\n");
1725 ret = -ENOMEM;
1726 goto err_release_region;
1727 }
Don Fry63097b32009-07-31 08:45:29 +00001728
1729 if (pdev)
1730 SET_NETDEV_DEV(dev, &pdev->dev);
Jeff Garzik4a5e8e22006-03-21 16:15:44 -05001731
1732 if (pcnet32_debug & NETIF_MSG_PROBE)
1733 printk(KERN_INFO PFX "%s at %#3lx,", chipname, ioaddr);
1734
1735 /* In most chips, after a chip reset, the ethernet address is read from the
1736 * station address PROM at the base address and programmed into the
1737 * "Physical Address Registers" CSR12-14.
1738 * As a precautionary measure, we read the PROM values and complain if
Linas Vepstasbc0e1fc2006-03-28 16:36:23 -06001739 * they disagree with the CSRs. If they miscompare, and the PROM addr
1740 * is valid, then the PROM addr is used.
Jeff Garzik4a5e8e22006-03-21 16:15:44 -05001741 */
1742 for (i = 0; i < 3; i++) {
1743 unsigned int val;
1744 val = a->read_csr(ioaddr, i + 12) & 0x0ffff;
1745 /* There may be endianness issues here. */
1746 dev->dev_addr[2 * i] = val & 0x0ff;
1747 dev->dev_addr[2 * i + 1] = (val >> 8) & 0x0ff;
1748 }
1749
1750 /* read PROM address and compare with CSR address */
Linus Torvalds1da177e2005-04-16 15:20:36 -07001751 for (i = 0; i < 6; i++)
Jeff Garzik4a5e8e22006-03-21 16:15:44 -05001752 promaddr[i] = inb(ioaddr + i);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001753
Joe Perches8e95a202009-12-03 07:58:21 +00001754 if (memcmp(promaddr, dev->dev_addr, 6) ||
1755 !is_valid_ether_addr(dev->dev_addr)) {
Jeff Garzik4a5e8e22006-03-21 16:15:44 -05001756 if (is_valid_ether_addr(promaddr)) {
1757 if (pcnet32_debug & NETIF_MSG_PROBE) {
1758 printk(" warning: CSR address invalid,\n");
1759 printk(KERN_INFO
1760 " using instead PROM address of");
1761 }
1762 memcpy(dev->dev_addr, promaddr, 6);
1763 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07001764 }
Jeff Garzik4a5e8e22006-03-21 16:15:44 -05001765 memcpy(dev->perm_addr, dev->dev_addr, dev->addr_len);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001766
Jeff Garzik4a5e8e22006-03-21 16:15:44 -05001767 /* if the ethernet address is not valid, force to 00:00:00:00:00:00 */
1768 if (!is_valid_ether_addr(dev->perm_addr))
Daniel Drake1f044932009-12-24 08:11:24 +00001769 memset(dev->dev_addr, 0, ETH_ALEN);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001770
Jeff Garzik4a5e8e22006-03-21 16:15:44 -05001771 if (pcnet32_debug & NETIF_MSG_PROBE) {
Johannes Berge1749612008-10-27 15:59:26 -07001772 printk(" %pM", dev->dev_addr);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001773
Jeff Garzik4a5e8e22006-03-21 16:15:44 -05001774 /* Version 0x2623 and 0x2624 */
1775 if (((chip_version + 1) & 0xfffe) == 0x2624) {
1776 i = a->read_csr(ioaddr, 80) & 0x0C00; /* Check tx_start_pt */
Joe Perchesad361c92009-07-06 13:05:40 -07001777 printk(KERN_INFO " tx_start_pt(0x%04x):", i);
Jeff Garzik4a5e8e22006-03-21 16:15:44 -05001778 switch (i >> 10) {
1779 case 0:
Joe Perchesad361c92009-07-06 13:05:40 -07001780 printk(KERN_CONT " 20 bytes,");
Jeff Garzik4a5e8e22006-03-21 16:15:44 -05001781 break;
1782 case 1:
Joe Perchesad361c92009-07-06 13:05:40 -07001783 printk(KERN_CONT " 64 bytes,");
Jeff Garzik4a5e8e22006-03-21 16:15:44 -05001784 break;
1785 case 2:
Joe Perchesad361c92009-07-06 13:05:40 -07001786 printk(KERN_CONT " 128 bytes,");
Jeff Garzik4a5e8e22006-03-21 16:15:44 -05001787 break;
1788 case 3:
Joe Perchesad361c92009-07-06 13:05:40 -07001789 printk(KERN_CONT "~220 bytes,");
Jeff Garzik4a5e8e22006-03-21 16:15:44 -05001790 break;
1791 }
1792 i = a->read_bcr(ioaddr, 18); /* Check Burst/Bus control */
Joe Perchesad361c92009-07-06 13:05:40 -07001793 printk(KERN_CONT " BCR18(%x):", i & 0xffff);
Jeff Garzik4a5e8e22006-03-21 16:15:44 -05001794 if (i & (1 << 5))
Joe Perchesad361c92009-07-06 13:05:40 -07001795 printk(KERN_CONT "BurstWrEn ");
Jeff Garzik4a5e8e22006-03-21 16:15:44 -05001796 if (i & (1 << 6))
Joe Perchesad361c92009-07-06 13:05:40 -07001797 printk(KERN_CONT "BurstRdEn ");
Jeff Garzik4a5e8e22006-03-21 16:15:44 -05001798 if (i & (1 << 7))
Joe Perchesad361c92009-07-06 13:05:40 -07001799 printk(KERN_CONT "DWordIO ");
Jeff Garzik4a5e8e22006-03-21 16:15:44 -05001800 if (i & (1 << 11))
Joe Perchesad361c92009-07-06 13:05:40 -07001801 printk(KERN_CONT "NoUFlow ");
Jeff Garzik4a5e8e22006-03-21 16:15:44 -05001802 i = a->read_bcr(ioaddr, 25);
Joe Perchesad361c92009-07-06 13:05:40 -07001803 printk(KERN_INFO " SRAMSIZE=0x%04x,", i << 8);
Jeff Garzik4a5e8e22006-03-21 16:15:44 -05001804 i = a->read_bcr(ioaddr, 26);
Joe Perchesad361c92009-07-06 13:05:40 -07001805 printk(KERN_CONT " SRAM_BND=0x%04x,", i << 8);
Jeff Garzik4a5e8e22006-03-21 16:15:44 -05001806 i = a->read_bcr(ioaddr, 27);
1807 if (i & (1 << 14))
Joe Perchesad361c92009-07-06 13:05:40 -07001808 printk(KERN_CONT "LowLatRx");
Jeff Garzik4a5e8e22006-03-21 16:15:44 -05001809 }
1810 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07001811
Jeff Garzik4a5e8e22006-03-21 16:15:44 -05001812 dev->base_addr = ioaddr;
Don Fry1e56a4b2007-03-06 10:55:00 -08001813 lp = netdev_priv(dev);
Jeff Garzik4a5e8e22006-03-21 16:15:44 -05001814 /* pci_alloc_consistent returns page-aligned memory, so we do not have to check the alignment */
Don Fry6ecb7662007-03-06 10:45:23 -08001815 if ((lp->init_block =
1816 pci_alloc_consistent(pdev, sizeof(*lp->init_block), &lp->init_dma_addr)) == NULL) {
Jeff Garzik4a5e8e22006-03-21 16:15:44 -05001817 if (pcnet32_debug & NETIF_MSG_PROBE)
1818 printk(KERN_ERR PFX
1819 "Consistent memory allocation failed.\n");
1820 ret = -ENOMEM;
1821 goto err_free_netdev;
1822 }
Jeff Garzik4a5e8e22006-03-21 16:15:44 -05001823 lp->pci_dev = pdev;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001824
Stephen Hemmingerbea33482007-10-03 16:41:36 -07001825 lp->dev = dev;
1826
Jeff Garzik4a5e8e22006-03-21 16:15:44 -05001827 spin_lock_init(&lp->lock);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001828
Jeff Garzik4a5e8e22006-03-21 16:15:44 -05001829 lp->name = chipname;
1830 lp->shared_irq = shared;
1831 lp->tx_ring_size = TX_RING_SIZE; /* default tx ring size */
1832 lp->rx_ring_size = RX_RING_SIZE; /* default rx ring size */
1833 lp->tx_mod_mask = lp->tx_ring_size - 1;
1834 lp->rx_mod_mask = lp->rx_ring_size - 1;
1835 lp->tx_len_bits = (PCNET32_LOG_TX_BUFFERS << 12);
1836 lp->rx_len_bits = (PCNET32_LOG_RX_BUFFERS << 4);
1837 lp->mii_if.full_duplex = fdx;
1838 lp->mii_if.phy_id_mask = 0x1f;
1839 lp->mii_if.reg_num_mask = 0x1f;
1840 lp->dxsuflo = dxsuflo;
1841 lp->mii = mii;
Don Fry8d916262006-08-22 10:22:37 -07001842 lp->chip_version = chip_version;
Jeff Garzik4a5e8e22006-03-21 16:15:44 -05001843 lp->msg_enable = pcnet32_debug;
Joe Perches8e95a202009-12-03 07:58:21 +00001844 if ((cards_found >= MAX_UNITS) ||
1845 (options[cards_found] >= sizeof(options_mapping)))
Jeff Garzik4a5e8e22006-03-21 16:15:44 -05001846 lp->options = PCNET32_PORT_ASEL;
1847 else
1848 lp->options = options_mapping[options[cards_found]];
1849 lp->mii_if.dev = dev;
1850 lp->mii_if.mdio_read = mdio_read;
1851 lp->mii_if.mdio_write = mdio_write;
1852
Don Fryfeff3482007-10-17 15:59:22 -07001853 /* napi.weight is used in both the napi and non-napi cases */
1854 lp->napi.weight = lp->rx_ring_size / 2;
1855
Stephen Hemmingerbea33482007-10-03 16:41:36 -07001856 netif_napi_add(dev, &lp->napi, pcnet32_poll, lp->rx_ring_size / 2);
Stephen Hemmingerbea33482007-10-03 16:41:36 -07001857
Jeff Garzik4a5e8e22006-03-21 16:15:44 -05001858 if (fdx && !(lp->options & PCNET32_PORT_ASEL) &&
1859 ((cards_found >= MAX_UNITS) || full_duplex[cards_found]))
1860 lp->options |= PCNET32_PORT_FD;
1861
Jeff Garzik4a5e8e22006-03-21 16:15:44 -05001862 lp->a = *a;
1863
1864 /* prior to register_netdev, dev->name is not yet correct */
1865 if (pcnet32_alloc_ring(dev, pci_name(lp->pci_dev))) {
1866 ret = -ENOMEM;
1867 goto err_free_ring;
1868 }
1869 /* detect special T1/E1 WAN card by checking for MAC address */
Joe Perches8e95a202009-12-03 07:58:21 +00001870 if (dev->dev_addr[0] == 0x00 && dev->dev_addr[1] == 0xe0 &&
1871 dev->dev_addr[2] == 0x75)
Jeff Garzik4a5e8e22006-03-21 16:15:44 -05001872 lp->options = PCNET32_PORT_FD | PCNET32_PORT_GPSI;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001873
Al Viro3e335452007-08-23 00:45:46 -04001874 lp->init_block->mode = cpu_to_le16(0x0003); /* Disable Rx and Tx. */
Don Fry6ecb7662007-03-06 10:45:23 -08001875 lp->init_block->tlen_rlen =
Al Viro3e335452007-08-23 00:45:46 -04001876 cpu_to_le16(lp->tx_len_bits | lp->rx_len_bits);
Jeff Garzik4a5e8e22006-03-21 16:15:44 -05001877 for (i = 0; i < 6; i++)
Don Fry6ecb7662007-03-06 10:45:23 -08001878 lp->init_block->phys_addr[i] = dev->dev_addr[i];
1879 lp->init_block->filter[0] = 0x00000000;
1880 lp->init_block->filter[1] = 0x00000000;
Al Viro3e335452007-08-23 00:45:46 -04001881 lp->init_block->rx_ring = cpu_to_le32(lp->rx_ring_dma_addr);
1882 lp->init_block->tx_ring = cpu_to_le32(lp->tx_ring_dma_addr);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001883
Jeff Garzik4a5e8e22006-03-21 16:15:44 -05001884 /* switch pcnet32 to 32bit mode */
1885 a->write_bcr(ioaddr, 20, 2);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001886
Don Fry6ecb7662007-03-06 10:45:23 -08001887 a->write_csr(ioaddr, 1, (lp->init_dma_addr & 0xffff));
1888 a->write_csr(ioaddr, 2, (lp->init_dma_addr >> 16));
Linus Torvalds1da177e2005-04-16 15:20:36 -07001889
Jeff Garzik4a5e8e22006-03-21 16:15:44 -05001890 if (pdev) { /* use the IRQ provided by PCI */
1891 dev->irq = pdev->irq;
1892 if (pcnet32_debug & NETIF_MSG_PROBE)
1893 printk(" assigned IRQ %d.\n", dev->irq);
1894 } else {
1895 unsigned long irq_mask = probe_irq_on();
Linus Torvalds1da177e2005-04-16 15:20:36 -07001896
Jeff Garzik4a5e8e22006-03-21 16:15:44 -05001897 /*
1898 * To auto-IRQ we enable the initialization-done and DMA error
1899 * interrupts. For ISA boards we get a DMA error, but VLB and PCI
1900 * boards will work.
1901 */
1902 /* Trigger an initialization just for the interrupt. */
Don Fryb368a3f2006-09-13 10:16:07 -07001903 a->write_csr(ioaddr, CSR0, CSR0_INTEN | CSR0_INIT);
Jeff Garzik4a5e8e22006-03-21 16:15:44 -05001904 mdelay(1);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001905
Jeff Garzik4a5e8e22006-03-21 16:15:44 -05001906 dev->irq = probe_irq_off(irq_mask);
1907 if (!dev->irq) {
1908 if (pcnet32_debug & NETIF_MSG_PROBE)
1909 printk(", failed to detect IRQ line.\n");
1910 ret = -ENODEV;
1911 goto err_free_ring;
1912 }
1913 if (pcnet32_debug & NETIF_MSG_PROBE)
1914 printk(", probed IRQ %d.\n", dev->irq);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001915 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07001916
Jeff Garzik4a5e8e22006-03-21 16:15:44 -05001917 /* Set the mii phy_id so that we can query the link state */
1918 if (lp->mii) {
1919 /* lp->phycount and lp->phymask are set to 0 by memset above */
Don Fryac62ef02006-03-20 15:26:03 -08001920
Jeff Garzik4a5e8e22006-03-21 16:15:44 -05001921 lp->mii_if.phy_id = ((lp->a.read_bcr(ioaddr, 33)) >> 5) & 0x1f;
1922 /* scan for PHYs */
1923 for (i = 0; i < PCNET32_MAX_PHYS; i++) {
1924 unsigned short id1, id2;
Don Fryac62ef02006-03-20 15:26:03 -08001925
Jeff Garzik4a5e8e22006-03-21 16:15:44 -05001926 id1 = mdio_read(dev, i, MII_PHYSID1);
1927 if (id1 == 0xffff)
1928 continue;
1929 id2 = mdio_read(dev, i, MII_PHYSID2);
1930 if (id2 == 0xffff)
1931 continue;
1932 if (i == 31 && ((chip_version + 1) & 0xfffe) == 0x2624)
1933 continue; /* 79C971 & 79C972 have phantom phy at id 31 */
1934 lp->phycount++;
1935 lp->phymask |= (1 << i);
1936 lp->mii_if.phy_id = i;
1937 if (pcnet32_debug & NETIF_MSG_PROBE)
1938 printk(KERN_INFO PFX
1939 "Found PHY %04x:%04x at address %d.\n",
1940 id1, id2, i);
1941 }
1942 lp->a.write_bcr(ioaddr, 33, (lp->mii_if.phy_id) << 5);
1943 if (lp->phycount > 1) {
1944 lp->options |= PCNET32_PORT_MII;
1945 }
Don Fryac62ef02006-03-20 15:26:03 -08001946 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07001947
Jeff Garzik4a5e8e22006-03-21 16:15:44 -05001948 init_timer(&lp->watchdog_timer);
1949 lp->watchdog_timer.data = (unsigned long)dev;
1950 lp->watchdog_timer.function = (void *)&pcnet32_watchdog;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001951
Jeff Garzik4a5e8e22006-03-21 16:15:44 -05001952 /* The PCNET32-specific entries in the device structure. */
Stephen Hemminger3bc124d2009-01-07 17:29:16 -08001953 dev->netdev_ops = &pcnet32_netdev_ops;
Jeff Garzik4a5e8e22006-03-21 16:15:44 -05001954 dev->ethtool_ops = &pcnet32_ethtool_ops;
Jeff Garzik4a5e8e22006-03-21 16:15:44 -05001955 dev->watchdog_timeo = (5 * HZ);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001956
Jeff Garzik4a5e8e22006-03-21 16:15:44 -05001957 /* Fill in the generic fields of the device structure. */
1958 if (register_netdev(dev))
1959 goto err_free_ring;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001960
Jeff Garzik4a5e8e22006-03-21 16:15:44 -05001961 if (pdev) {
1962 pci_set_drvdata(pdev, dev);
1963 } else {
1964 lp->next = pcnet32_dev;
1965 pcnet32_dev = dev;
1966 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07001967
Jeff Garzik4a5e8e22006-03-21 16:15:44 -05001968 if (pcnet32_debug & NETIF_MSG_PROBE)
1969 printk(KERN_INFO "%s: registered as %s\n", dev->name, lp->name);
1970 cards_found++;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001971
Jeff Garzik4a5e8e22006-03-21 16:15:44 -05001972 /* enable LED writes */
1973 a->write_bcr(ioaddr, 2, a->read_bcr(ioaddr, 2) | 0x1000);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001974
Jeff Garzik4a5e8e22006-03-21 16:15:44 -05001975 return 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001976
Don Frydf4e7f72009-07-31 08:40:06 +00001977err_free_ring:
Jeff Garzik4a5e8e22006-03-21 16:15:44 -05001978 pcnet32_free_ring(dev);
Jeff Garzik7d2e3cb2008-05-13 01:41:58 -04001979 pci_free_consistent(lp->pci_dev, sizeof(*lp->init_block),
Don Fry6ecb7662007-03-06 10:45:23 -08001980 lp->init_block, lp->init_dma_addr);
Don Frydf4e7f72009-07-31 08:40:06 +00001981err_free_netdev:
Jeff Garzik4a5e8e22006-03-21 16:15:44 -05001982 free_netdev(dev);
Don Frydf4e7f72009-07-31 08:40:06 +00001983err_release_region:
Jeff Garzik4a5e8e22006-03-21 16:15:44 -05001984 release_region(ioaddr, PCNET32_TOTAL_SIZE);
1985 return ret;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001986}
1987
Don Frya88c8442005-11-01 12:04:33 -08001988/* if any allocation fails, caller must also call pcnet32_free_ring */
Andrew Mortonb166cfb2008-05-14 16:20:14 -07001989static int pcnet32_alloc_ring(struct net_device *dev, const char *name)
Hubert WS Lineabf0412005-09-14 11:39:25 -07001990{
Don Fry1e56a4b2007-03-06 10:55:00 -08001991 struct pcnet32_private *lp = netdev_priv(dev);
Hubert WS Lineabf0412005-09-14 11:39:25 -07001992
Jeff Garzik4a5e8e22006-03-21 16:15:44 -05001993 lp->tx_ring = pci_alloc_consistent(lp->pci_dev,
1994 sizeof(struct pcnet32_tx_head) *
1995 lp->tx_ring_size,
1996 &lp->tx_ring_dma_addr);
1997 if (lp->tx_ring == NULL) {
Don Fry12fa30f2006-06-29 13:53:48 -07001998 if (netif_msg_drv(lp))
Joe Perchesad361c92009-07-06 13:05:40 -07001999 printk(KERN_ERR PFX
Jeff Garzik4a5e8e22006-03-21 16:15:44 -05002000 "%s: Consistent memory allocation failed.\n",
2001 name);
2002 return -ENOMEM;
2003 }
Hubert WS Lineabf0412005-09-14 11:39:25 -07002004
Jeff Garzik4a5e8e22006-03-21 16:15:44 -05002005 lp->rx_ring = pci_alloc_consistent(lp->pci_dev,
2006 sizeof(struct pcnet32_rx_head) *
2007 lp->rx_ring_size,
2008 &lp->rx_ring_dma_addr);
2009 if (lp->rx_ring == NULL) {
Don Fry12fa30f2006-06-29 13:53:48 -07002010 if (netif_msg_drv(lp))
Joe Perchesad361c92009-07-06 13:05:40 -07002011 printk(KERN_ERR PFX
Jeff Garzik4a5e8e22006-03-21 16:15:44 -05002012 "%s: Consistent memory allocation failed.\n",
2013 name);
2014 return -ENOMEM;
2015 }
Hubert WS Lineabf0412005-09-14 11:39:25 -07002016
Don Fry12fa30f2006-06-29 13:53:48 -07002017 lp->tx_dma_addr = kcalloc(lp->tx_ring_size, sizeof(dma_addr_t),
Jeff Garzik4a5e8e22006-03-21 16:15:44 -05002018 GFP_ATOMIC);
2019 if (!lp->tx_dma_addr) {
Don Fry12fa30f2006-06-29 13:53:48 -07002020 if (netif_msg_drv(lp))
Joe Perchesad361c92009-07-06 13:05:40 -07002021 printk(KERN_ERR PFX
Jeff Garzik4a5e8e22006-03-21 16:15:44 -05002022 "%s: Memory allocation failed.\n", name);
2023 return -ENOMEM;
2024 }
Hubert WS Lineabf0412005-09-14 11:39:25 -07002025
Don Fry12fa30f2006-06-29 13:53:48 -07002026 lp->rx_dma_addr = kcalloc(lp->rx_ring_size, sizeof(dma_addr_t),
Jeff Garzik4a5e8e22006-03-21 16:15:44 -05002027 GFP_ATOMIC);
2028 if (!lp->rx_dma_addr) {
Don Fry12fa30f2006-06-29 13:53:48 -07002029 if (netif_msg_drv(lp))
Joe Perchesad361c92009-07-06 13:05:40 -07002030 printk(KERN_ERR PFX
Jeff Garzik4a5e8e22006-03-21 16:15:44 -05002031 "%s: Memory allocation failed.\n", name);
2032 return -ENOMEM;
2033 }
Hubert WS Lineabf0412005-09-14 11:39:25 -07002034
Don Fry12fa30f2006-06-29 13:53:48 -07002035 lp->tx_skbuff = kcalloc(lp->tx_ring_size, sizeof(struct sk_buff *),
Jeff Garzik4a5e8e22006-03-21 16:15:44 -05002036 GFP_ATOMIC);
2037 if (!lp->tx_skbuff) {
Don Fry12fa30f2006-06-29 13:53:48 -07002038 if (netif_msg_drv(lp))
Joe Perchesad361c92009-07-06 13:05:40 -07002039 printk(KERN_ERR PFX
Jeff Garzik4a5e8e22006-03-21 16:15:44 -05002040 "%s: Memory allocation failed.\n", name);
2041 return -ENOMEM;
2042 }
Hubert WS Lineabf0412005-09-14 11:39:25 -07002043
Don Fry12fa30f2006-06-29 13:53:48 -07002044 lp->rx_skbuff = kcalloc(lp->rx_ring_size, sizeof(struct sk_buff *),
Jeff Garzik4a5e8e22006-03-21 16:15:44 -05002045 GFP_ATOMIC);
2046 if (!lp->rx_skbuff) {
Don Fry12fa30f2006-06-29 13:53:48 -07002047 if (netif_msg_drv(lp))
Joe Perchesad361c92009-07-06 13:05:40 -07002048 printk(KERN_ERR PFX
Jeff Garzik4a5e8e22006-03-21 16:15:44 -05002049 "%s: Memory allocation failed.\n", name);
2050 return -ENOMEM;
2051 }
Hubert WS Lineabf0412005-09-14 11:39:25 -07002052
Jeff Garzik4a5e8e22006-03-21 16:15:44 -05002053 return 0;
Hubert WS Lineabf0412005-09-14 11:39:25 -07002054}
2055
Hubert WS Lineabf0412005-09-14 11:39:25 -07002056static void pcnet32_free_ring(struct net_device *dev)
2057{
Don Fry1e56a4b2007-03-06 10:55:00 -08002058 struct pcnet32_private *lp = netdev_priv(dev);
Hubert WS Lineabf0412005-09-14 11:39:25 -07002059
Jeff Garzik4a5e8e22006-03-21 16:15:44 -05002060 kfree(lp->tx_skbuff);
2061 lp->tx_skbuff = NULL;
Hubert WS Lineabf0412005-09-14 11:39:25 -07002062
Jeff Garzik4a5e8e22006-03-21 16:15:44 -05002063 kfree(lp->rx_skbuff);
2064 lp->rx_skbuff = NULL;
Hubert WS Lineabf0412005-09-14 11:39:25 -07002065
Jeff Garzik4a5e8e22006-03-21 16:15:44 -05002066 kfree(lp->tx_dma_addr);
2067 lp->tx_dma_addr = NULL;
Hubert WS Lineabf0412005-09-14 11:39:25 -07002068
Jeff Garzik4a5e8e22006-03-21 16:15:44 -05002069 kfree(lp->rx_dma_addr);
2070 lp->rx_dma_addr = NULL;
Hubert WS Lineabf0412005-09-14 11:39:25 -07002071
Jeff Garzik4a5e8e22006-03-21 16:15:44 -05002072 if (lp->tx_ring) {
2073 pci_free_consistent(lp->pci_dev,
2074 sizeof(struct pcnet32_tx_head) *
2075 lp->tx_ring_size, lp->tx_ring,
2076 lp->tx_ring_dma_addr);
2077 lp->tx_ring = NULL;
2078 }
Hubert WS Lineabf0412005-09-14 11:39:25 -07002079
Jeff Garzik4a5e8e22006-03-21 16:15:44 -05002080 if (lp->rx_ring) {
2081 pci_free_consistent(lp->pci_dev,
2082 sizeof(struct pcnet32_rx_head) *
2083 lp->rx_ring_size, lp->rx_ring,
2084 lp->rx_ring_dma_addr);
2085 lp->rx_ring = NULL;
2086 }
Hubert WS Lineabf0412005-09-14 11:39:25 -07002087}
2088
Jeff Garzik4a5e8e22006-03-21 16:15:44 -05002089static int pcnet32_open(struct net_device *dev)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002090{
Don Fry1e56a4b2007-03-06 10:55:00 -08002091 struct pcnet32_private *lp = netdev_priv(dev);
Don Fry63097b32009-07-31 08:45:29 +00002092 struct pci_dev *pdev = lp->pci_dev;
Jeff Garzik4a5e8e22006-03-21 16:15:44 -05002093 unsigned long ioaddr = dev->base_addr;
2094 u16 val;
2095 int i;
2096 int rc;
2097 unsigned long flags;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002098
Joe Perchesa0607fd2009-11-18 23:29:17 -08002099 if (request_irq(dev->irq, pcnet32_interrupt,
Thomas Gleixner1fb9df52006-07-01 19:29:39 -07002100 lp->shared_irq ? IRQF_SHARED : 0, dev->name,
Jeff Garzik4a5e8e22006-03-21 16:15:44 -05002101 (void *)dev)) {
2102 return -EAGAIN;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002103 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07002104
Jeff Garzik4a5e8e22006-03-21 16:15:44 -05002105 spin_lock_irqsave(&lp->lock, flags);
2106 /* Check for a valid station address */
2107 if (!is_valid_ether_addr(dev->dev_addr)) {
2108 rc = -EINVAL;
2109 goto err_free_irq;
2110 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07002111
Jeff Garzik4a5e8e22006-03-21 16:15:44 -05002112 /* Reset the PCNET32 */
2113 lp->a.reset(ioaddr);
2114
2115 /* switch pcnet32 to 32bit mode */
2116 lp->a.write_bcr(ioaddr, 20, 2);
2117
2118 if (netif_msg_ifup(lp))
2119 printk(KERN_DEBUG
2120 "%s: pcnet32_open() irq %d tx/rx rings %#x/%#x init %#x.\n",
2121 dev->name, dev->irq, (u32) (lp->tx_ring_dma_addr),
2122 (u32) (lp->rx_ring_dma_addr),
Don Fry6ecb7662007-03-06 10:45:23 -08002123 (u32) (lp->init_dma_addr));
Jeff Garzik4a5e8e22006-03-21 16:15:44 -05002124
2125 /* set/reset autoselect bit */
2126 val = lp->a.read_bcr(ioaddr, 2) & ~2;
2127 if (lp->options & PCNET32_PORT_ASEL)
2128 val |= 2;
2129 lp->a.write_bcr(ioaddr, 2, val);
2130
2131 /* handle full duplex setting */
2132 if (lp->mii_if.full_duplex) {
2133 val = lp->a.read_bcr(ioaddr, 9) & ~3;
2134 if (lp->options & PCNET32_PORT_FD) {
2135 val |= 1;
2136 if (lp->options == (PCNET32_PORT_FD | PCNET32_PORT_AUI))
2137 val |= 2;
2138 } else if (lp->options & PCNET32_PORT_ASEL) {
2139 /* workaround of xSeries250, turn on for 79C975 only */
Don Fry8d916262006-08-22 10:22:37 -07002140 if (lp->chip_version == 0x2627)
Jeff Garzik4a5e8e22006-03-21 16:15:44 -05002141 val |= 3;
2142 }
2143 lp->a.write_bcr(ioaddr, 9, val);
2144 }
2145
2146 /* set/reset GPSI bit in test register */
2147 val = lp->a.read_csr(ioaddr, 124) & ~0x10;
2148 if ((lp->options & PCNET32_PORT_PORTSEL) == PCNET32_PORT_GPSI)
2149 val |= 0x10;
2150 lp->a.write_csr(ioaddr, 124, val);
2151
2152 /* Allied Telesyn AT 2700/2701 FX are 100Mbit only and do not negotiate */
Don Fry63097b32009-07-31 08:45:29 +00002153 if (pdev && pdev->subsystem_vendor == PCI_VENDOR_ID_AT &&
2154 (pdev->subsystem_device == PCI_SUBDEVICE_ID_AT_2700FX ||
2155 pdev->subsystem_device == PCI_SUBDEVICE_ID_AT_2701FX)) {
Don Fryac62ef02006-03-20 15:26:03 -08002156 if (lp->options & PCNET32_PORT_ASEL) {
Jeff Garzik4a5e8e22006-03-21 16:15:44 -05002157 lp->options = PCNET32_PORT_FD | PCNET32_PORT_100;
2158 if (netif_msg_link(lp))
2159 printk(KERN_DEBUG
2160 "%s: Setting 100Mb-Full Duplex.\n",
2161 dev->name);
Don Fryac62ef02006-03-20 15:26:03 -08002162 }
Jeff Garzik4a5e8e22006-03-21 16:15:44 -05002163 }
2164 if (lp->phycount < 2) {
2165 /*
2166 * 24 Jun 2004 according AMD, in order to change the PHY,
2167 * DANAS (or DISPM for 79C976) must be set; then select the speed,
2168 * duplex, and/or enable auto negotiation, and clear DANAS
2169 */
2170 if (lp->mii && !(lp->options & PCNET32_PORT_ASEL)) {
2171 lp->a.write_bcr(ioaddr, 32,
2172 lp->a.read_bcr(ioaddr, 32) | 0x0080);
2173 /* disable Auto Negotiation, set 10Mpbs, HD */
2174 val = lp->a.read_bcr(ioaddr, 32) & ~0xb8;
2175 if (lp->options & PCNET32_PORT_FD)
2176 val |= 0x10;
2177 if (lp->options & PCNET32_PORT_100)
2178 val |= 0x08;
2179 lp->a.write_bcr(ioaddr, 32, val);
2180 } else {
2181 if (lp->options & PCNET32_PORT_ASEL) {
2182 lp->a.write_bcr(ioaddr, 32,
2183 lp->a.read_bcr(ioaddr,
2184 32) | 0x0080);
2185 /* enable auto negotiate, setup, disable fd */
2186 val = lp->a.read_bcr(ioaddr, 32) & ~0x98;
2187 val |= 0x20;
2188 lp->a.write_bcr(ioaddr, 32, val);
2189 }
2190 }
2191 } else {
2192 int first_phy = -1;
2193 u16 bmcr;
2194 u32 bcr9;
2195 struct ethtool_cmd ecmd;
2196
2197 /*
2198 * There is really no good other way to handle multiple PHYs
2199 * other than turning off all automatics
2200 */
2201 val = lp->a.read_bcr(ioaddr, 2);
2202 lp->a.write_bcr(ioaddr, 2, val & ~2);
2203 val = lp->a.read_bcr(ioaddr, 32);
2204 lp->a.write_bcr(ioaddr, 32, val & ~(1 << 7)); /* stop MII manager */
2205
2206 if (!(lp->options & PCNET32_PORT_ASEL)) {
2207 /* setup ecmd */
2208 ecmd.port = PORT_MII;
2209 ecmd.transceiver = XCVR_INTERNAL;
2210 ecmd.autoneg = AUTONEG_DISABLE;
2211 ecmd.speed =
2212 lp->
2213 options & PCNET32_PORT_100 ? SPEED_100 : SPEED_10;
2214 bcr9 = lp->a.read_bcr(ioaddr, 9);
2215
2216 if (lp->options & PCNET32_PORT_FD) {
2217 ecmd.duplex = DUPLEX_FULL;
2218 bcr9 |= (1 << 0);
2219 } else {
2220 ecmd.duplex = DUPLEX_HALF;
2221 bcr9 |= ~(1 << 0);
2222 }
2223 lp->a.write_bcr(ioaddr, 9, bcr9);
2224 }
2225
2226 for (i = 0; i < PCNET32_MAX_PHYS; i++) {
2227 if (lp->phymask & (1 << i)) {
2228 /* isolate all but the first PHY */
2229 bmcr = mdio_read(dev, i, MII_BMCR);
2230 if (first_phy == -1) {
2231 first_phy = i;
2232 mdio_write(dev, i, MII_BMCR,
2233 bmcr & ~BMCR_ISOLATE);
2234 } else {
2235 mdio_write(dev, i, MII_BMCR,
2236 bmcr | BMCR_ISOLATE);
2237 }
2238 /* use mii_ethtool_sset to setup PHY */
2239 lp->mii_if.phy_id = i;
2240 ecmd.phy_address = i;
2241 if (lp->options & PCNET32_PORT_ASEL) {
2242 mii_ethtool_gset(&lp->mii_if, &ecmd);
2243 ecmd.autoneg = AUTONEG_ENABLE;
2244 }
2245 mii_ethtool_sset(&lp->mii_if, &ecmd);
2246 }
2247 }
2248 lp->mii_if.phy_id = first_phy;
2249 if (netif_msg_link(lp))
2250 printk(KERN_INFO "%s: Using PHY number %d.\n",
2251 dev->name, first_phy);
2252 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07002253
2254#ifdef DO_DXSUFLO
Jeff Garzik4a5e8e22006-03-21 16:15:44 -05002255 if (lp->dxsuflo) { /* Disable transmit stop on underflow */
Don Fryb368a3f2006-09-13 10:16:07 -07002256 val = lp->a.read_csr(ioaddr, CSR3);
Jeff Garzik4a5e8e22006-03-21 16:15:44 -05002257 val |= 0x40;
Don Fryb368a3f2006-09-13 10:16:07 -07002258 lp->a.write_csr(ioaddr, CSR3, val);
Jeff Garzik4a5e8e22006-03-21 16:15:44 -05002259 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07002260#endif
2261
Don Fry6ecb7662007-03-06 10:45:23 -08002262 lp->init_block->mode =
Al Viro3e335452007-08-23 00:45:46 -04002263 cpu_to_le16((lp->options & PCNET32_PORT_PORTSEL) << 7);
Jeff Garzik4a5e8e22006-03-21 16:15:44 -05002264 pcnet32_load_multicast(dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002265
Jeff Garzik4a5e8e22006-03-21 16:15:44 -05002266 if (pcnet32_init_ring(dev)) {
2267 rc = -ENOMEM;
2268 goto err_free_ring;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002269 }
Hubert WS Lineabf0412005-09-14 11:39:25 -07002270
Stephen Hemmingerbea33482007-10-03 16:41:36 -07002271 napi_enable(&lp->napi);
Stephen Hemmingerbea33482007-10-03 16:41:36 -07002272
Jeff Garzik4a5e8e22006-03-21 16:15:44 -05002273 /* Re-initialize the PCNET32, and start it when done. */
Don Fry6ecb7662007-03-06 10:45:23 -08002274 lp->a.write_csr(ioaddr, 1, (lp->init_dma_addr & 0xffff));
2275 lp->a.write_csr(ioaddr, 2, (lp->init_dma_addr >> 16));
Hubert WS Lineabf0412005-09-14 11:39:25 -07002276
Don Fryb368a3f2006-09-13 10:16:07 -07002277 lp->a.write_csr(ioaddr, CSR4, 0x0915); /* auto tx pad */
2278 lp->a.write_csr(ioaddr, CSR0, CSR0_INIT);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002279
Jeff Garzik4a5e8e22006-03-21 16:15:44 -05002280 netif_start_queue(dev);
2281
Don Fry8d916262006-08-22 10:22:37 -07002282 if (lp->chip_version >= PCNET32_79C970A) {
2283 /* Print the link status and start the watchdog */
2284 pcnet32_check_media(dev, 1);
Stephen Hemminger283a21d32009-01-08 11:17:13 -08002285 mod_timer(&lp->watchdog_timer, PCNET32_WATCHDOG_TIMEOUT);
Don Fry8d916262006-08-22 10:22:37 -07002286 }
Jeff Garzik4a5e8e22006-03-21 16:15:44 -05002287
2288 i = 0;
2289 while (i++ < 100)
Don Fryb368a3f2006-09-13 10:16:07 -07002290 if (lp->a.read_csr(ioaddr, CSR0) & CSR0_IDON)
Jeff Garzik4a5e8e22006-03-21 16:15:44 -05002291 break;
2292 /*
2293 * We used to clear the InitDone bit, 0x0100, here but Mark Stockton
2294 * reports that doing so triggers a bug in the '974.
2295 */
Don Fryb368a3f2006-09-13 10:16:07 -07002296 lp->a.write_csr(ioaddr, CSR0, CSR0_NORMAL);
Jeff Garzik4a5e8e22006-03-21 16:15:44 -05002297
2298 if (netif_msg_ifup(lp))
2299 printk(KERN_DEBUG
2300 "%s: pcnet32 open after %d ticks, init block %#x csr0 %4.4x.\n",
2301 dev->name, i,
Don Fry6ecb7662007-03-06 10:45:23 -08002302 (u32) (lp->init_dma_addr),
Don Fryb368a3f2006-09-13 10:16:07 -07002303 lp->a.read_csr(ioaddr, CSR0));
Jeff Garzik4a5e8e22006-03-21 16:15:44 -05002304
2305 spin_unlock_irqrestore(&lp->lock, flags);
2306
2307 return 0; /* Always succeed */
2308
2309 err_free_ring:
2310 /* free any allocated skbuffs */
Don Fryac5bfe42006-06-29 13:55:27 -07002311 pcnet32_purge_rx_ring(dev);
Jeff Garzik4a5e8e22006-03-21 16:15:44 -05002312
Jeff Garzik4a5e8e22006-03-21 16:15:44 -05002313 /*
2314 * Switch back to 16bit mode to avoid problems with dumb
2315 * DOS packet driver after a warm reboot
2316 */
2317 lp->a.write_bcr(ioaddr, 20, 4);
2318
2319 err_free_irq:
2320 spin_unlock_irqrestore(&lp->lock, flags);
2321 free_irq(dev->irq, dev);
2322 return rc;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002323}
2324
2325/*
2326 * The LANCE has been halted for one reason or another (busmaster memory
2327 * arbitration error, Tx FIFO underflow, driver stopped it to reconfigure,
2328 * etc.). Modern LANCE variants always reload their ring-buffer
2329 * configuration when restarted, so we must reinitialize our ring
2330 * context before restarting. As part of this reinitialization,
2331 * find all packets still on the Tx ring and pretend that they had been
2332 * sent (in effect, drop the packets on the floor) - the higher-level
2333 * protocols will time out and retransmit. It'd be better to shuffle
2334 * these skbs to a temp list and then actually re-Tx them after
2335 * restarting the chip, but I'm too lazy to do so right now. dplatt@3do.com
2336 */
2337
Jeff Garzik4a5e8e22006-03-21 16:15:44 -05002338static void pcnet32_purge_tx_ring(struct net_device *dev)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002339{
Don Fry1e56a4b2007-03-06 10:55:00 -08002340 struct pcnet32_private *lp = netdev_priv(dev);
Jeff Garzik4a5e8e22006-03-21 16:15:44 -05002341 int i;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002342
Jeff Garzik4a5e8e22006-03-21 16:15:44 -05002343 for (i = 0; i < lp->tx_ring_size; i++) {
2344 lp->tx_ring[i].status = 0; /* CPU owns buffer */
2345 wmb(); /* Make sure adapter sees owner change */
2346 if (lp->tx_skbuff[i]) {
2347 pci_unmap_single(lp->pci_dev, lp->tx_dma_addr[i],
2348 lp->tx_skbuff[i]->len,
2349 PCI_DMA_TODEVICE);
2350 dev_kfree_skb_any(lp->tx_skbuff[i]);
2351 }
2352 lp->tx_skbuff[i] = NULL;
2353 lp->tx_dma_addr[i] = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002354 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07002355}
2356
Linus Torvalds1da177e2005-04-16 15:20:36 -07002357/* Initialize the PCNET32 Rx and Tx rings. */
Jeff Garzik4a5e8e22006-03-21 16:15:44 -05002358static int pcnet32_init_ring(struct net_device *dev)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002359{
Don Fry1e56a4b2007-03-06 10:55:00 -08002360 struct pcnet32_private *lp = netdev_priv(dev);
Jeff Garzik4a5e8e22006-03-21 16:15:44 -05002361 int i;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002362
Jeff Garzik4a5e8e22006-03-21 16:15:44 -05002363 lp->tx_full = 0;
2364 lp->cur_rx = lp->cur_tx = 0;
2365 lp->dirty_rx = lp->dirty_tx = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002366
Jeff Garzik4a5e8e22006-03-21 16:15:44 -05002367 for (i = 0; i < lp->rx_ring_size; i++) {
2368 struct sk_buff *rx_skbuff = lp->rx_skbuff[i];
2369 if (rx_skbuff == NULL) {
2370 if (!
2371 (rx_skbuff = lp->rx_skbuff[i] =
Don Fry232c5642008-02-08 07:32:26 -08002372 dev_alloc_skb(PKT_BUF_SKB))) {
Jeff Garzik4a5e8e22006-03-21 16:15:44 -05002373 /* there is not much, we can do at this point */
Don Fryb368a3f2006-09-13 10:16:07 -07002374 if (netif_msg_drv(lp))
Jeff Garzik4a5e8e22006-03-21 16:15:44 -05002375 printk(KERN_ERR
2376 "%s: pcnet32_init_ring dev_alloc_skb failed.\n",
2377 dev->name);
2378 return -1;
2379 }
Don Fry232c5642008-02-08 07:32:26 -08002380 skb_reserve(rx_skbuff, NET_IP_ALIGN);
Jeff Garzik4a5e8e22006-03-21 16:15:44 -05002381 }
2382
2383 rmb();
2384 if (lp->rx_dma_addr[i] == 0)
2385 lp->rx_dma_addr[i] =
2386 pci_map_single(lp->pci_dev, rx_skbuff->data,
Don Fry232c5642008-02-08 07:32:26 -08002387 PKT_BUF_SIZE, PCI_DMA_FROMDEVICE);
Al Viro3e335452007-08-23 00:45:46 -04002388 lp->rx_ring[i].base = cpu_to_le32(lp->rx_dma_addr[i]);
Don Fry232c5642008-02-08 07:32:26 -08002389 lp->rx_ring[i].buf_length = cpu_to_le16(NEG_BUF_SIZE);
Jeff Garzik4a5e8e22006-03-21 16:15:44 -05002390 wmb(); /* Make sure owner changes after all others are visible */
Al Viro3e335452007-08-23 00:45:46 -04002391 lp->rx_ring[i].status = cpu_to_le16(0x8000);
Jeff Garzik4a5e8e22006-03-21 16:15:44 -05002392 }
2393 /* The Tx buffer address is filled in as needed, but we do need to clear
2394 * the upper ownership bit. */
2395 for (i = 0; i < lp->tx_ring_size; i++) {
2396 lp->tx_ring[i].status = 0; /* CPU owns buffer */
2397 wmb(); /* Make sure adapter sees owner change */
2398 lp->tx_ring[i].base = 0;
2399 lp->tx_dma_addr[i] = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002400 }
2401
Don Fry6ecb7662007-03-06 10:45:23 -08002402 lp->init_block->tlen_rlen =
Al Viro3e335452007-08-23 00:45:46 -04002403 cpu_to_le16(lp->tx_len_bits | lp->rx_len_bits);
Jeff Garzik4a5e8e22006-03-21 16:15:44 -05002404 for (i = 0; i < 6; i++)
Don Fry6ecb7662007-03-06 10:45:23 -08002405 lp->init_block->phys_addr[i] = dev->dev_addr[i];
Al Viro3e335452007-08-23 00:45:46 -04002406 lp->init_block->rx_ring = cpu_to_le32(lp->rx_ring_dma_addr);
2407 lp->init_block->tx_ring = cpu_to_le32(lp->tx_ring_dma_addr);
Jeff Garzik4a5e8e22006-03-21 16:15:44 -05002408 wmb(); /* Make sure all changes are visible */
2409 return 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002410}
2411
2412/* the pcnet32 has been issued a stop or reset. Wait for the stop bit
2413 * then flush the pending transmit operations, re-initialize the ring,
2414 * and tell the chip to initialize.
2415 */
Jeff Garzik4a5e8e22006-03-21 16:15:44 -05002416static void pcnet32_restart(struct net_device *dev, unsigned int csr0_bits)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002417{
Don Fry1e56a4b2007-03-06 10:55:00 -08002418 struct pcnet32_private *lp = netdev_priv(dev);
Jeff Garzik4a5e8e22006-03-21 16:15:44 -05002419 unsigned long ioaddr = dev->base_addr;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002420 int i;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002421
Jeff Garzik4a5e8e22006-03-21 16:15:44 -05002422 /* wait for stop */
2423 for (i = 0; i < 100; i++)
Don Fryb368a3f2006-09-13 10:16:07 -07002424 if (lp->a.read_csr(ioaddr, CSR0) & CSR0_STOP)
Jeff Garzik4a5e8e22006-03-21 16:15:44 -05002425 break;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002426
Jeff Garzik4a5e8e22006-03-21 16:15:44 -05002427 if (i >= 100 && netif_msg_drv(lp))
2428 printk(KERN_ERR
2429 "%s: pcnet32_restart timed out waiting for stop.\n",
2430 dev->name);
2431
2432 pcnet32_purge_tx_ring(dev);
2433 if (pcnet32_init_ring(dev))
2434 return;
2435
2436 /* ReInit Ring */
Don Fryb368a3f2006-09-13 10:16:07 -07002437 lp->a.write_csr(ioaddr, CSR0, CSR0_INIT);
Jeff Garzik4a5e8e22006-03-21 16:15:44 -05002438 i = 0;
2439 while (i++ < 1000)
Don Fryb368a3f2006-09-13 10:16:07 -07002440 if (lp->a.read_csr(ioaddr, CSR0) & CSR0_IDON)
Jeff Garzik4a5e8e22006-03-21 16:15:44 -05002441 break;
2442
Don Fryb368a3f2006-09-13 10:16:07 -07002443 lp->a.write_csr(ioaddr, CSR0, csr0_bits);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002444}
2445
Jeff Garzik4a5e8e22006-03-21 16:15:44 -05002446static void pcnet32_tx_timeout(struct net_device *dev)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002447{
Don Fry1e56a4b2007-03-06 10:55:00 -08002448 struct pcnet32_private *lp = netdev_priv(dev);
Jeff Garzik4a5e8e22006-03-21 16:15:44 -05002449 unsigned long ioaddr = dev->base_addr, flags;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002450
Jeff Garzik4a5e8e22006-03-21 16:15:44 -05002451 spin_lock_irqsave(&lp->lock, flags);
2452 /* Transmitter timeout, serious problems. */
2453 if (pcnet32_debug & NETIF_MSG_DRV)
2454 printk(KERN_ERR
2455 "%s: transmit timed out, status %4.4x, resetting.\n",
Don Fryb368a3f2006-09-13 10:16:07 -07002456 dev->name, lp->a.read_csr(ioaddr, CSR0));
2457 lp->a.write_csr(ioaddr, CSR0, CSR0_STOP);
Don Fry4f1e5ba2007-10-17 17:06:19 -07002458 dev->stats.tx_errors++;
Jeff Garzik4a5e8e22006-03-21 16:15:44 -05002459 if (netif_msg_tx_err(lp)) {
2460 int i;
2461 printk(KERN_DEBUG
2462 " Ring data dump: dirty_tx %d cur_tx %d%s cur_rx %d.",
2463 lp->dirty_tx, lp->cur_tx, lp->tx_full ? " (full)" : "",
2464 lp->cur_rx);
2465 for (i = 0; i < lp->rx_ring_size; i++)
2466 printk("%s %08x %04x %08x %04x", i & 1 ? "" : "\n ",
2467 le32_to_cpu(lp->rx_ring[i].base),
2468 (-le16_to_cpu(lp->rx_ring[i].buf_length)) &
2469 0xffff, le32_to_cpu(lp->rx_ring[i].msg_length),
2470 le16_to_cpu(lp->rx_ring[i].status));
2471 for (i = 0; i < lp->tx_ring_size; i++)
2472 printk("%s %08x %04x %08x %04x", i & 1 ? "" : "\n ",
2473 le32_to_cpu(lp->tx_ring[i].base),
2474 (-le16_to_cpu(lp->tx_ring[i].length)) & 0xffff,
2475 le32_to_cpu(lp->tx_ring[i].misc),
2476 le16_to_cpu(lp->tx_ring[i].status));
2477 printk("\n");
2478 }
Don Fryb368a3f2006-09-13 10:16:07 -07002479 pcnet32_restart(dev, CSR0_NORMAL);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002480
Jeff Garzik4a5e8e22006-03-21 16:15:44 -05002481 dev->trans_start = jiffies;
2482 netif_wake_queue(dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002483
Jeff Garzik4a5e8e22006-03-21 16:15:44 -05002484 spin_unlock_irqrestore(&lp->lock, flags);
2485}
Linus Torvalds1da177e2005-04-16 15:20:36 -07002486
Stephen Hemminger613573252009-08-31 19:50:58 +00002487static netdev_tx_t pcnet32_start_xmit(struct sk_buff *skb,
2488 struct net_device *dev)
Jeff Garzik4a5e8e22006-03-21 16:15:44 -05002489{
Don Fry1e56a4b2007-03-06 10:55:00 -08002490 struct pcnet32_private *lp = netdev_priv(dev);
Jeff Garzik4a5e8e22006-03-21 16:15:44 -05002491 unsigned long ioaddr = dev->base_addr;
2492 u16 status;
2493 int entry;
2494 unsigned long flags;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002495
Jeff Garzik4a5e8e22006-03-21 16:15:44 -05002496 spin_lock_irqsave(&lp->lock, flags);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002497
Jeff Garzik4a5e8e22006-03-21 16:15:44 -05002498 if (netif_msg_tx_queued(lp)) {
2499 printk(KERN_DEBUG
2500 "%s: pcnet32_start_xmit() called, csr0 %4.4x.\n",
Don Fryb368a3f2006-09-13 10:16:07 -07002501 dev->name, lp->a.read_csr(ioaddr, CSR0));
Jeff Garzik4a5e8e22006-03-21 16:15:44 -05002502 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07002503
Jeff Garzik4a5e8e22006-03-21 16:15:44 -05002504 /* Default status -- will not enable Successful-TxDone
2505 * interrupt when that option is available to us.
2506 */
2507 status = 0x8300;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002508
Jeff Garzik4a5e8e22006-03-21 16:15:44 -05002509 /* Fill in a Tx ring entry */
Linus Torvalds1da177e2005-04-16 15:20:36 -07002510
Jeff Garzik4a5e8e22006-03-21 16:15:44 -05002511 /* Mask to ring buffer boundary. */
2512 entry = lp->cur_tx & lp->tx_mod_mask;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002513
Jeff Garzik4a5e8e22006-03-21 16:15:44 -05002514 /* Caution: the write order is important here, set the status
2515 * with the "ownership" bits last. */
Linus Torvalds1da177e2005-04-16 15:20:36 -07002516
Al Viro3e335452007-08-23 00:45:46 -04002517 lp->tx_ring[entry].length = cpu_to_le16(-skb->len);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002518
Jeff Garzik4a5e8e22006-03-21 16:15:44 -05002519 lp->tx_ring[entry].misc = 0x00000000;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002520
Jeff Garzik4a5e8e22006-03-21 16:15:44 -05002521 lp->tx_skbuff[entry] = skb;
2522 lp->tx_dma_addr[entry] =
2523 pci_map_single(lp->pci_dev, skb->data, skb->len, PCI_DMA_TODEVICE);
Al Viro3e335452007-08-23 00:45:46 -04002524 lp->tx_ring[entry].base = cpu_to_le32(lp->tx_dma_addr[entry]);
Jeff Garzik4a5e8e22006-03-21 16:15:44 -05002525 wmb(); /* Make sure owner changes after all others are visible */
Al Viro3e335452007-08-23 00:45:46 -04002526 lp->tx_ring[entry].status = cpu_to_le16(status);
Jeff Garzik4a5e8e22006-03-21 16:15:44 -05002527
2528 lp->cur_tx++;
Don Fry4f1e5ba2007-10-17 17:06:19 -07002529 dev->stats.tx_bytes += skb->len;
Jeff Garzik4a5e8e22006-03-21 16:15:44 -05002530
2531 /* Trigger an immediate send poll. */
Don Fryb368a3f2006-09-13 10:16:07 -07002532 lp->a.write_csr(ioaddr, CSR0, CSR0_INTEN | CSR0_TXPOLL);
Jeff Garzik4a5e8e22006-03-21 16:15:44 -05002533
2534 dev->trans_start = jiffies;
2535
2536 if (lp->tx_ring[(entry + 1) & lp->tx_mod_mask].base != 0) {
2537 lp->tx_full = 1;
2538 netif_stop_queue(dev);
2539 }
2540 spin_unlock_irqrestore(&lp->lock, flags);
Patrick McHardy6ed10652009-06-23 06:03:08 +00002541 return NETDEV_TX_OK;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002542}
2543
2544/* The PCNET32 interrupt handler. */
2545static irqreturn_t
David Howells7d12e782006-10-05 14:55:46 +01002546pcnet32_interrupt(int irq, void *dev_id)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002547{
Jeff Garzik4a5e8e22006-03-21 16:15:44 -05002548 struct net_device *dev = dev_id;
2549 struct pcnet32_private *lp;
2550 unsigned long ioaddr;
Don Fry5c993462006-09-13 10:15:43 -07002551 u16 csr0;
Jeff Garzik4a5e8e22006-03-21 16:15:44 -05002552 int boguscnt = max_interrupt_work;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002553
Jeff Garzik4a5e8e22006-03-21 16:15:44 -05002554 ioaddr = dev->base_addr;
Don Fry1e56a4b2007-03-06 10:55:00 -08002555 lp = netdev_priv(dev);
Jeff Garzik4a5e8e22006-03-21 16:15:44 -05002556
2557 spin_lock(&lp->lock);
2558
Don Fry3904c322006-09-13 10:16:38 -07002559 csr0 = lp->a.read_csr(ioaddr, CSR0);
2560 while ((csr0 & 0x8f00) && --boguscnt >= 0) {
Jeff Garzik4a5e8e22006-03-21 16:15:44 -05002561 if (csr0 == 0xffff) {
2562 break; /* PCMCIA remove happened */
2563 }
2564 /* Acknowledge all of the current interrupt sources ASAP. */
Don Fry3904c322006-09-13 10:16:38 -07002565 lp->a.write_csr(ioaddr, CSR0, csr0 & ~0x004f);
Jeff Garzik4a5e8e22006-03-21 16:15:44 -05002566
Jeff Garzik4a5e8e22006-03-21 16:15:44 -05002567 if (netif_msg_intr(lp))
2568 printk(KERN_DEBUG
2569 "%s: interrupt csr0=%#2.2x new csr=%#2.2x.\n",
Don Fry3904c322006-09-13 10:16:38 -07002570 dev->name, csr0, lp->a.read_csr(ioaddr, CSR0));
Jeff Garzik4a5e8e22006-03-21 16:15:44 -05002571
Jeff Garzik4a5e8e22006-03-21 16:15:44 -05002572 /* Log misc errors. */
2573 if (csr0 & 0x4000)
Don Fry4f1e5ba2007-10-17 17:06:19 -07002574 dev->stats.tx_errors++; /* Tx babble. */
Jeff Garzik4a5e8e22006-03-21 16:15:44 -05002575 if (csr0 & 0x1000) {
2576 /*
Don Fry3904c322006-09-13 10:16:38 -07002577 * This happens when our receive ring is full. This
2578 * shouldn't be a problem as we will see normal rx
2579 * interrupts for the frames in the receive ring. But
2580 * there are some PCI chipsets (I can reproduce this
2581 * on SP3G with Intel saturn chipset) which have
2582 * sometimes problems and will fill up the receive
2583 * ring with error descriptors. In this situation we
2584 * don't get a rx interrupt, but a missed frame
Don Fry7de745e2006-09-13 10:16:53 -07002585 * interrupt sooner or later.
Jeff Garzik4a5e8e22006-03-21 16:15:44 -05002586 */
Don Fry4f1e5ba2007-10-17 17:06:19 -07002587 dev->stats.rx_errors++; /* Missed a Rx frame. */
Jeff Garzik4a5e8e22006-03-21 16:15:44 -05002588 }
2589 if (csr0 & 0x0800) {
2590 if (netif_msg_drv(lp))
2591 printk(KERN_ERR
2592 "%s: Bus master arbitration failure, status %4.4x.\n",
2593 dev->name, csr0);
2594 /* unlike for the lance, there is no restart needed */
2595 }
Ben Hutchings288379f2009-01-19 16:43:59 -08002596 if (napi_schedule_prep(&lp->napi)) {
Don Fry7de745e2006-09-13 10:16:53 -07002597 u16 val;
2598 /* set interrupt masks */
2599 val = lp->a.read_csr(ioaddr, CSR3);
2600 val |= 0x5f00;
2601 lp->a.write_csr(ioaddr, CSR3, val);
John Dykstrace105a02009-04-29 17:22:30 -07002602
Ben Hutchings288379f2009-01-19 16:43:59 -08002603 __napi_schedule(&lp->napi);
Don Fry7de745e2006-09-13 10:16:53 -07002604 break;
2605 }
Don Fry3904c322006-09-13 10:16:38 -07002606 csr0 = lp->a.read_csr(ioaddr, CSR0);
Jeff Garzik4a5e8e22006-03-21 16:15:44 -05002607 }
2608
Linus Torvalds1da177e2005-04-16 15:20:36 -07002609 if (netif_msg_intr(lp))
Jeff Garzik4a5e8e22006-03-21 16:15:44 -05002610 printk(KERN_DEBUG "%s: exiting interrupt, csr0=%#4.4x.\n",
Don Fryb368a3f2006-09-13 10:16:07 -07002611 dev->name, lp->a.read_csr(ioaddr, CSR0));
Linus Torvalds1da177e2005-04-16 15:20:36 -07002612
Jeff Garzik4a5e8e22006-03-21 16:15:44 -05002613 spin_unlock(&lp->lock);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002614
Jeff Garzik4a5e8e22006-03-21 16:15:44 -05002615 return IRQ_HANDLED;
2616}
Linus Torvalds1da177e2005-04-16 15:20:36 -07002617
Jeff Garzik4a5e8e22006-03-21 16:15:44 -05002618static int pcnet32_close(struct net_device *dev)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002619{
Jeff Garzik4a5e8e22006-03-21 16:15:44 -05002620 unsigned long ioaddr = dev->base_addr;
Don Fry1e56a4b2007-03-06 10:55:00 -08002621 struct pcnet32_private *lp = netdev_priv(dev);
Jeff Garzik4a5e8e22006-03-21 16:15:44 -05002622 unsigned long flags;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002623
Jeff Garzik4a5e8e22006-03-21 16:15:44 -05002624 del_timer_sync(&lp->watchdog_timer);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002625
Jeff Garzik4a5e8e22006-03-21 16:15:44 -05002626 netif_stop_queue(dev);
Stephen Hemmingerbea33482007-10-03 16:41:36 -07002627 napi_disable(&lp->napi);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002628
Jeff Garzik4a5e8e22006-03-21 16:15:44 -05002629 spin_lock_irqsave(&lp->lock, flags);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002630
Don Fry4f1e5ba2007-10-17 17:06:19 -07002631 dev->stats.rx_missed_errors = lp->a.read_csr(ioaddr, 112);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002632
Jeff Garzik4a5e8e22006-03-21 16:15:44 -05002633 if (netif_msg_ifdown(lp))
2634 printk(KERN_DEBUG
2635 "%s: Shutting down ethercard, status was %2.2x.\n",
Don Fryb368a3f2006-09-13 10:16:07 -07002636 dev->name, lp->a.read_csr(ioaddr, CSR0));
Linus Torvalds1da177e2005-04-16 15:20:36 -07002637
Jeff Garzik4a5e8e22006-03-21 16:15:44 -05002638 /* We stop the PCNET32 here -- it occasionally polls memory if we don't. */
Don Fryb368a3f2006-09-13 10:16:07 -07002639 lp->a.write_csr(ioaddr, CSR0, CSR0_STOP);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002640
Linus Torvalds1da177e2005-04-16 15:20:36 -07002641 /*
Jeff Garzik4a5e8e22006-03-21 16:15:44 -05002642 * Switch back to 16bit mode to avoid problems with dumb
2643 * DOS packet driver after a warm reboot
Linus Torvalds1da177e2005-04-16 15:20:36 -07002644 */
Jeff Garzik4a5e8e22006-03-21 16:15:44 -05002645 lp->a.write_bcr(ioaddr, 20, 4);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002646
Jeff Garzik4a5e8e22006-03-21 16:15:44 -05002647 spin_unlock_irqrestore(&lp->lock, flags);
2648
2649 free_irq(dev->irq, dev);
2650
2651 spin_lock_irqsave(&lp->lock, flags);
2652
Don Fryac5bfe42006-06-29 13:55:27 -07002653 pcnet32_purge_rx_ring(dev);
2654 pcnet32_purge_tx_ring(dev);
Jeff Garzik4a5e8e22006-03-21 16:15:44 -05002655
2656 spin_unlock_irqrestore(&lp->lock, flags);
2657
2658 return 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002659}
2660
Jeff Garzik4a5e8e22006-03-21 16:15:44 -05002661static struct net_device_stats *pcnet32_get_stats(struct net_device *dev)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002662{
Don Fry1e56a4b2007-03-06 10:55:00 -08002663 struct pcnet32_private *lp = netdev_priv(dev);
Jeff Garzik4a5e8e22006-03-21 16:15:44 -05002664 unsigned long ioaddr = dev->base_addr;
Jeff Garzik4a5e8e22006-03-21 16:15:44 -05002665 unsigned long flags;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002666
Jeff Garzik4a5e8e22006-03-21 16:15:44 -05002667 spin_lock_irqsave(&lp->lock, flags);
Don Fry4f1e5ba2007-10-17 17:06:19 -07002668 dev->stats.rx_missed_errors = lp->a.read_csr(ioaddr, 112);
Jeff Garzik4a5e8e22006-03-21 16:15:44 -05002669 spin_unlock_irqrestore(&lp->lock, flags);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002670
Don Fry4f1e5ba2007-10-17 17:06:19 -07002671 return &dev->stats;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002672}
2673
2674/* taken from the sunlance driver, which it took from the depca driver */
Jeff Garzik4a5e8e22006-03-21 16:15:44 -05002675static void pcnet32_load_multicast(struct net_device *dev)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002676{
Don Fry1e56a4b2007-03-06 10:55:00 -08002677 struct pcnet32_private *lp = netdev_priv(dev);
Don Fry6ecb7662007-03-06 10:45:23 -08002678 volatile struct pcnet32_init_block *ib = lp->init_block;
Al Viro3e335452007-08-23 00:45:46 -04002679 volatile __le16 *mcast_table = (__le16 *)ib->filter;
Jeff Garzik4a5e8e22006-03-21 16:15:44 -05002680 struct dev_mc_list *dmi = dev->mc_list;
Don Frydf27f4a2006-06-29 13:55:02 -07002681 unsigned long ioaddr = dev->base_addr;
Jeff Garzik4a5e8e22006-03-21 16:15:44 -05002682 char *addrs;
2683 int i;
2684 u32 crc;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002685
Jeff Garzik4a5e8e22006-03-21 16:15:44 -05002686 /* set all multicast bits */
2687 if (dev->flags & IFF_ALLMULTI) {
Al Viro3e335452007-08-23 00:45:46 -04002688 ib->filter[0] = cpu_to_le32(~0U);
2689 ib->filter[1] = cpu_to_le32(~0U);
Don Frydf27f4a2006-06-29 13:55:02 -07002690 lp->a.write_csr(ioaddr, PCNET32_MC_FILTER, 0xffff);
2691 lp->a.write_csr(ioaddr, PCNET32_MC_FILTER+1, 0xffff);
2692 lp->a.write_csr(ioaddr, PCNET32_MC_FILTER+2, 0xffff);
2693 lp->a.write_csr(ioaddr, PCNET32_MC_FILTER+3, 0xffff);
Jeff Garzik4a5e8e22006-03-21 16:15:44 -05002694 return;
2695 }
2696 /* clear the multicast filter */
2697 ib->filter[0] = 0;
2698 ib->filter[1] = 0;
2699
2700 /* Add addresses */
2701 for (i = 0; i < dev->mc_count; i++) {
2702 addrs = dmi->dmi_addr;
2703 dmi = dmi->next;
2704
2705 /* multicast address? */
2706 if (!(*addrs & 1))
2707 continue;
2708
2709 crc = ether_crc_le(6, addrs);
2710 crc = crc >> 26;
Al Viro3e335452007-08-23 00:45:46 -04002711 mcast_table[crc >> 4] |= cpu_to_le16(1 << (crc & 0xf));
Jeff Garzik4a5e8e22006-03-21 16:15:44 -05002712 }
Don Frydf27f4a2006-06-29 13:55:02 -07002713 for (i = 0; i < 4; i++)
2714 lp->a.write_csr(ioaddr, PCNET32_MC_FILTER + i,
2715 le16_to_cpu(mcast_table[i]));
Linus Torvalds1da177e2005-04-16 15:20:36 -07002716 return;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002717}
2718
Linus Torvalds1da177e2005-04-16 15:20:36 -07002719/*
2720 * Set or clear the multicast filter for this adaptor.
2721 */
2722static void pcnet32_set_multicast_list(struct net_device *dev)
2723{
Jeff Garzik4a5e8e22006-03-21 16:15:44 -05002724 unsigned long ioaddr = dev->base_addr, flags;
Don Fry1e56a4b2007-03-06 10:55:00 -08002725 struct pcnet32_private *lp = netdev_priv(dev);
Don Frydf27f4a2006-06-29 13:55:02 -07002726 int csr15, suspended;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002727
Jeff Garzik4a5e8e22006-03-21 16:15:44 -05002728 spin_lock_irqsave(&lp->lock, flags);
Don Frydf27f4a2006-06-29 13:55:02 -07002729 suspended = pcnet32_suspend(dev, &flags, 0);
2730 csr15 = lp->a.read_csr(ioaddr, CSR15);
Jeff Garzik4a5e8e22006-03-21 16:15:44 -05002731 if (dev->flags & IFF_PROMISC) {
2732 /* Log any net taps. */
2733 if (netif_msg_hw(lp))
2734 printk(KERN_INFO "%s: Promiscuous mode enabled.\n",
2735 dev->name);
Don Fry6ecb7662007-03-06 10:45:23 -08002736 lp->init_block->mode =
Al Viro3e335452007-08-23 00:45:46 -04002737 cpu_to_le16(0x8000 | (lp->options & PCNET32_PORT_PORTSEL) <<
Jeff Garzik4a5e8e22006-03-21 16:15:44 -05002738 7);
Don Frydf27f4a2006-06-29 13:55:02 -07002739 lp->a.write_csr(ioaddr, CSR15, csr15 | 0x8000);
Jeff Garzik4a5e8e22006-03-21 16:15:44 -05002740 } else {
Don Fry6ecb7662007-03-06 10:45:23 -08002741 lp->init_block->mode =
Al Viro3e335452007-08-23 00:45:46 -04002742 cpu_to_le16((lp->options & PCNET32_PORT_PORTSEL) << 7);
Don Frydf27f4a2006-06-29 13:55:02 -07002743 lp->a.write_csr(ioaddr, CSR15, csr15 & 0x7fff);
Jeff Garzik4a5e8e22006-03-21 16:15:44 -05002744 pcnet32_load_multicast(dev);
2745 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07002746
Don Frydf27f4a2006-06-29 13:55:02 -07002747 if (suspended) {
2748 int csr5;
2749 /* clear SUSPEND (SPND) - CSR5 bit 0 */
2750 csr5 = lp->a.read_csr(ioaddr, CSR5);
2751 lp->a.write_csr(ioaddr, CSR5, csr5 & (~CSR5_SUSPEND));
Don Fryb368a3f2006-09-13 10:16:07 -07002752 } else {
Don Frydf27f4a2006-06-29 13:55:02 -07002753 lp->a.write_csr(ioaddr, CSR0, CSR0_STOP);
2754 pcnet32_restart(dev, CSR0_NORMAL);
2755 netif_wake_queue(dev);
2756 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07002757
Jeff Garzik4a5e8e22006-03-21 16:15:44 -05002758 spin_unlock_irqrestore(&lp->lock, flags);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002759}
2760
2761/* This routine assumes that the lp->lock is held */
2762static int mdio_read(struct net_device *dev, int phy_id, int reg_num)
2763{
Don Fry1e56a4b2007-03-06 10:55:00 -08002764 struct pcnet32_private *lp = netdev_priv(dev);
Jeff Garzik4a5e8e22006-03-21 16:15:44 -05002765 unsigned long ioaddr = dev->base_addr;
2766 u16 val_out;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002767
Jeff Garzik4a5e8e22006-03-21 16:15:44 -05002768 if (!lp->mii)
2769 return 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002770
Jeff Garzik4a5e8e22006-03-21 16:15:44 -05002771 lp->a.write_bcr(ioaddr, 33, ((phy_id & 0x1f) << 5) | (reg_num & 0x1f));
2772 val_out = lp->a.read_bcr(ioaddr, 34);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002773
Jeff Garzik4a5e8e22006-03-21 16:15:44 -05002774 return val_out;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002775}
2776
2777/* This routine assumes that the lp->lock is held */
2778static void mdio_write(struct net_device *dev, int phy_id, int reg_num, int val)
2779{
Don Fry1e56a4b2007-03-06 10:55:00 -08002780 struct pcnet32_private *lp = netdev_priv(dev);
Jeff Garzik4a5e8e22006-03-21 16:15:44 -05002781 unsigned long ioaddr = dev->base_addr;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002782
Jeff Garzik4a5e8e22006-03-21 16:15:44 -05002783 if (!lp->mii)
2784 return;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002785
Jeff Garzik4a5e8e22006-03-21 16:15:44 -05002786 lp->a.write_bcr(ioaddr, 33, ((phy_id & 0x1f) << 5) | (reg_num & 0x1f));
2787 lp->a.write_bcr(ioaddr, 34, val);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002788}
2789
2790static int pcnet32_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
2791{
Don Fry1e56a4b2007-03-06 10:55:00 -08002792 struct pcnet32_private *lp = netdev_priv(dev);
Jeff Garzik4a5e8e22006-03-21 16:15:44 -05002793 int rc;
2794 unsigned long flags;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002795
Jeff Garzik4a5e8e22006-03-21 16:15:44 -05002796 /* SIOC[GS]MIIxxx ioctls */
2797 if (lp->mii) {
2798 spin_lock_irqsave(&lp->lock, flags);
2799 rc = generic_mii_ioctl(&lp->mii_if, if_mii(rq), cmd, NULL);
2800 spin_unlock_irqrestore(&lp->lock, flags);
2801 } else {
2802 rc = -EOPNOTSUPP;
2803 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07002804
Jeff Garzik4a5e8e22006-03-21 16:15:44 -05002805 return rc;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002806}
2807
Don Fryac62ef02006-03-20 15:26:03 -08002808static int pcnet32_check_otherphy(struct net_device *dev)
2809{
Don Fry1e56a4b2007-03-06 10:55:00 -08002810 struct pcnet32_private *lp = netdev_priv(dev);
Jeff Garzik4a5e8e22006-03-21 16:15:44 -05002811 struct mii_if_info mii = lp->mii_if;
2812 u16 bmcr;
2813 int i;
Don Fryac62ef02006-03-20 15:26:03 -08002814
Jeff Garzik4a5e8e22006-03-21 16:15:44 -05002815 for (i = 0; i < PCNET32_MAX_PHYS; i++) {
2816 if (i == lp->mii_if.phy_id)
2817 continue; /* skip active phy */
2818 if (lp->phymask & (1 << i)) {
2819 mii.phy_id = i;
2820 if (mii_link_ok(&mii)) {
2821 /* found PHY with active link */
2822 if (netif_msg_link(lp))
2823 printk(KERN_INFO
2824 "%s: Using PHY number %d.\n",
2825 dev->name, i);
Don Fryac62ef02006-03-20 15:26:03 -08002826
Jeff Garzik4a5e8e22006-03-21 16:15:44 -05002827 /* isolate inactive phy */
2828 bmcr =
2829 mdio_read(dev, lp->mii_if.phy_id, MII_BMCR);
2830 mdio_write(dev, lp->mii_if.phy_id, MII_BMCR,
2831 bmcr | BMCR_ISOLATE);
Don Fryac62ef02006-03-20 15:26:03 -08002832
Jeff Garzik4a5e8e22006-03-21 16:15:44 -05002833 /* de-isolate new phy */
2834 bmcr = mdio_read(dev, i, MII_BMCR);
2835 mdio_write(dev, i, MII_BMCR,
2836 bmcr & ~BMCR_ISOLATE);
Don Fryac62ef02006-03-20 15:26:03 -08002837
Jeff Garzik4a5e8e22006-03-21 16:15:44 -05002838 /* set new phy address */
2839 lp->mii_if.phy_id = i;
2840 return 1;
2841 }
2842 }
Don Fryac62ef02006-03-20 15:26:03 -08002843 }
Jeff Garzik4a5e8e22006-03-21 16:15:44 -05002844 return 0;
Don Fryac62ef02006-03-20 15:26:03 -08002845}
2846
2847/*
2848 * Show the status of the media. Similar to mii_check_media however it
2849 * correctly shows the link speed for all (tested) pcnet32 variants.
2850 * Devices with no mii just report link state without speed.
2851 *
2852 * Caller is assumed to hold and release the lp->lock.
2853 */
2854
2855static void pcnet32_check_media(struct net_device *dev, int verbose)
2856{
Don Fry1e56a4b2007-03-06 10:55:00 -08002857 struct pcnet32_private *lp = netdev_priv(dev);
Jeff Garzik4a5e8e22006-03-21 16:15:44 -05002858 int curr_link;
2859 int prev_link = netif_carrier_ok(dev) ? 1 : 0;
2860 u32 bcr9;
Don Fryac62ef02006-03-20 15:26:03 -08002861
Don Fryac62ef02006-03-20 15:26:03 -08002862 if (lp->mii) {
Jeff Garzik4a5e8e22006-03-21 16:15:44 -05002863 curr_link = mii_link_ok(&lp->mii_if);
Don Fryac62ef02006-03-20 15:26:03 -08002864 } else {
Jeff Garzik4a5e8e22006-03-21 16:15:44 -05002865 ulong ioaddr = dev->base_addr; /* card base I/O address */
2866 curr_link = (lp->a.read_bcr(ioaddr, 4) != 0xc0);
Don Fryac62ef02006-03-20 15:26:03 -08002867 }
Jeff Garzik4a5e8e22006-03-21 16:15:44 -05002868 if (!curr_link) {
2869 if (prev_link || verbose) {
2870 netif_carrier_off(dev);
2871 if (netif_msg_link(lp))
2872 printk(KERN_INFO "%s: link down\n", dev->name);
2873 }
2874 if (lp->phycount > 1) {
2875 curr_link = pcnet32_check_otherphy(dev);
2876 prev_link = 0;
2877 }
2878 } else if (verbose || !prev_link) {
2879 netif_carrier_on(dev);
2880 if (lp->mii) {
2881 if (netif_msg_link(lp)) {
2882 struct ethtool_cmd ecmd;
2883 mii_ethtool_gset(&lp->mii_if, &ecmd);
2884 printk(KERN_INFO
2885 "%s: link up, %sMbps, %s-duplex\n",
2886 dev->name,
2887 (ecmd.speed == SPEED_100) ? "100" : "10",
2888 (ecmd.duplex ==
2889 DUPLEX_FULL) ? "full" : "half");
2890 }
2891 bcr9 = lp->a.read_bcr(dev->base_addr, 9);
2892 if ((bcr9 & (1 << 0)) != lp->mii_if.full_duplex) {
2893 if (lp->mii_if.full_duplex)
2894 bcr9 |= (1 << 0);
2895 else
2896 bcr9 &= ~(1 << 0);
2897 lp->a.write_bcr(dev->base_addr, 9, bcr9);
2898 }
2899 } else {
2900 if (netif_msg_link(lp))
2901 printk(KERN_INFO "%s: link up\n", dev->name);
2902 }
2903 }
Don Fryac62ef02006-03-20 15:26:03 -08002904}
2905
2906/*
2907 * Check for loss of link and link establishment.
2908 * Can not use mii_check_media because it does nothing if mode is forced.
2909 */
2910
Linus Torvalds1da177e2005-04-16 15:20:36 -07002911static void pcnet32_watchdog(struct net_device *dev)
2912{
Don Fry1e56a4b2007-03-06 10:55:00 -08002913 struct pcnet32_private *lp = netdev_priv(dev);
Jeff Garzik4a5e8e22006-03-21 16:15:44 -05002914 unsigned long flags;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002915
Jeff Garzik4a5e8e22006-03-21 16:15:44 -05002916 /* Print the link status if it has changed */
2917 spin_lock_irqsave(&lp->lock, flags);
2918 pcnet32_check_media(dev, 0);
2919 spin_unlock_irqrestore(&lp->lock, flags);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002920
Stephen Hemminger283a21d32009-01-08 11:17:13 -08002921 mod_timer(&lp->watchdog_timer, round_jiffies(PCNET32_WATCHDOG_TIMEOUT));
Linus Torvalds1da177e2005-04-16 15:20:36 -07002922}
2923
Don Fry917270c2007-08-26 21:22:32 -07002924static int pcnet32_pm_suspend(struct pci_dev *pdev, pm_message_t state)
2925{
2926 struct net_device *dev = pci_get_drvdata(pdev);
2927
2928 if (netif_running(dev)) {
2929 netif_device_detach(dev);
2930 pcnet32_close(dev);
2931 }
2932 pci_save_state(pdev);
2933 pci_set_power_state(pdev, pci_choose_state(pdev, state));
2934 return 0;
2935}
2936
2937static int pcnet32_pm_resume(struct pci_dev *pdev)
2938{
2939 struct net_device *dev = pci_get_drvdata(pdev);
2940
2941 pci_set_power_state(pdev, PCI_D0);
2942 pci_restore_state(pdev);
2943
2944 if (netif_running(dev)) {
2945 pcnet32_open(dev);
2946 netif_device_attach(dev);
2947 }
2948 return 0;
2949}
2950
Linus Torvalds1da177e2005-04-16 15:20:36 -07002951static void __devexit pcnet32_remove_one(struct pci_dev *pdev)
2952{
Jeff Garzik4a5e8e22006-03-21 16:15:44 -05002953 struct net_device *dev = pci_get_drvdata(pdev);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002954
Jeff Garzik4a5e8e22006-03-21 16:15:44 -05002955 if (dev) {
Don Fry1e56a4b2007-03-06 10:55:00 -08002956 struct pcnet32_private *lp = netdev_priv(dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002957
Jeff Garzik4a5e8e22006-03-21 16:15:44 -05002958 unregister_netdev(dev);
2959 pcnet32_free_ring(dev);
2960 release_region(dev->base_addr, PCNET32_TOTAL_SIZE);
Jeff Garzik7d2e3cb2008-05-13 01:41:58 -04002961 pci_free_consistent(lp->pci_dev, sizeof(*lp->init_block),
Don Fry6ecb7662007-03-06 10:45:23 -08002962 lp->init_block, lp->init_dma_addr);
Jeff Garzik4a5e8e22006-03-21 16:15:44 -05002963 free_netdev(dev);
2964 pci_disable_device(pdev);
2965 pci_set_drvdata(pdev, NULL);
2966 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07002967}
2968
2969static struct pci_driver pcnet32_driver = {
Jeff Garzik4a5e8e22006-03-21 16:15:44 -05002970 .name = DRV_NAME,
2971 .probe = pcnet32_probe_pci,
2972 .remove = __devexit_p(pcnet32_remove_one),
2973 .id_table = pcnet32_pci_tbl,
Don Fry917270c2007-08-26 21:22:32 -07002974 .suspend = pcnet32_pm_suspend,
2975 .resume = pcnet32_pm_resume,
Linus Torvalds1da177e2005-04-16 15:20:36 -07002976};
2977
2978/* An additional parameter that may be passed in... */
2979static int debug = -1;
2980static int tx_start_pt = -1;
2981static int pcnet32_have_pci;
2982
2983module_param(debug, int, 0);
2984MODULE_PARM_DESC(debug, DRV_NAME " debug level");
2985module_param(max_interrupt_work, int, 0);
Jeff Garzik4a5e8e22006-03-21 16:15:44 -05002986MODULE_PARM_DESC(max_interrupt_work,
2987 DRV_NAME " maximum events handled per interrupt");
Linus Torvalds1da177e2005-04-16 15:20:36 -07002988module_param(rx_copybreak, int, 0);
Jeff Garzik4a5e8e22006-03-21 16:15:44 -05002989MODULE_PARM_DESC(rx_copybreak,
2990 DRV_NAME " copy breakpoint for copy-only-tiny-frames");
Linus Torvalds1da177e2005-04-16 15:20:36 -07002991module_param(tx_start_pt, int, 0);
2992MODULE_PARM_DESC(tx_start_pt, DRV_NAME " transmit start point (0-3)");
2993module_param(pcnet32vlb, int, 0);
2994MODULE_PARM_DESC(pcnet32vlb, DRV_NAME " Vesa local bus (VLB) support (0/1)");
2995module_param_array(options, int, NULL, 0);
2996MODULE_PARM_DESC(options, DRV_NAME " initial option setting(s) (0-15)");
2997module_param_array(full_duplex, int, NULL, 0);
2998MODULE_PARM_DESC(full_duplex, DRV_NAME " full duplex setting(s) (1)");
2999/* Module Parameter for HomePNA cards added by Patrick Simmons, 2004 */
3000module_param_array(homepna, int, NULL, 0);
Jeff Garzik4a5e8e22006-03-21 16:15:44 -05003001MODULE_PARM_DESC(homepna,
3002 DRV_NAME
3003 " mode for 79C978 cards (1 for HomePNA, 0 for Ethernet, default Ethernet");
Linus Torvalds1da177e2005-04-16 15:20:36 -07003004
3005MODULE_AUTHOR("Thomas Bogendoerfer");
3006MODULE_DESCRIPTION("Driver for PCnet32 and PCnetPCI based ethercards");
3007MODULE_LICENSE("GPL");
3008
3009#define PCNET32_MSG_DEFAULT (NETIF_MSG_DRV | NETIF_MSG_PROBE | NETIF_MSG_LINK)
3010
3011static int __init pcnet32_init_module(void)
3012{
Jeff Garzik4a5e8e22006-03-21 16:15:44 -05003013 printk(KERN_INFO "%s", version);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003014
Jeff Garzik4a5e8e22006-03-21 16:15:44 -05003015 pcnet32_debug = netif_msg_init(debug, PCNET32_MSG_DEFAULT);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003016
Jeff Garzik4a5e8e22006-03-21 16:15:44 -05003017 if ((tx_start_pt >= 0) && (tx_start_pt <= 3))
3018 tx_start = tx_start_pt;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003019
Jeff Garzik4a5e8e22006-03-21 16:15:44 -05003020 /* find the PCI devices */
Jeff Garzik29917622006-08-19 17:48:59 -04003021 if (!pci_register_driver(&pcnet32_driver))
Jeff Garzik4a5e8e22006-03-21 16:15:44 -05003022 pcnet32_have_pci = 1;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003023
Jeff Garzik4a5e8e22006-03-21 16:15:44 -05003024 /* should we find any remaining VLbus devices ? */
3025 if (pcnet32vlb)
Don Frydcaf9762006-06-29 13:52:29 -07003026 pcnet32_probe_vlbus(pcnet32_portlist);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003027
Jeff Garzik4a5e8e22006-03-21 16:15:44 -05003028 if (cards_found && (pcnet32_debug & NETIF_MSG_PROBE))
3029 printk(KERN_INFO PFX "%d cards_found.\n", cards_found);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003030
Jeff Garzik4a5e8e22006-03-21 16:15:44 -05003031 return (pcnet32_have_pci + cards_found) ? 0 : -ENODEV;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003032}
3033
3034static void __exit pcnet32_cleanup_module(void)
3035{
Jeff Garzik4a5e8e22006-03-21 16:15:44 -05003036 struct net_device *next_dev;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003037
Jeff Garzik4a5e8e22006-03-21 16:15:44 -05003038 while (pcnet32_dev) {
Don Fry1e56a4b2007-03-06 10:55:00 -08003039 struct pcnet32_private *lp = netdev_priv(pcnet32_dev);
Jeff Garzik4a5e8e22006-03-21 16:15:44 -05003040 next_dev = lp->next;
3041 unregister_netdev(pcnet32_dev);
3042 pcnet32_free_ring(pcnet32_dev);
3043 release_region(pcnet32_dev->base_addr, PCNET32_TOTAL_SIZE);
Jeff Garzik7d2e3cb2008-05-13 01:41:58 -04003044 pci_free_consistent(lp->pci_dev, sizeof(*lp->init_block),
Don Fry6ecb7662007-03-06 10:45:23 -08003045 lp->init_block, lp->init_dma_addr);
Jeff Garzik4a5e8e22006-03-21 16:15:44 -05003046 free_netdev(pcnet32_dev);
3047 pcnet32_dev = next_dev;
3048 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07003049
Jeff Garzik4a5e8e22006-03-21 16:15:44 -05003050 if (pcnet32_have_pci)
3051 pci_unregister_driver(&pcnet32_driver);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003052}
3053
3054module_init(pcnet32_init_module);
3055module_exit(pcnet32_cleanup_module);
3056
3057/*
3058 * Local variables:
3059 * c-indent-level: 4
3060 * tab-width: 8
3061 * End:
3062 */